yahoo messenger
Publisher Description ;
Yahoo! Messenger is a free service that allows you to see when your friends are online and ready to talk, send private, instant messages so no one else can hear, get instant alerts for new messages in your Yahoo! Mail account, and keep track of your stocks portfolios and use stock price limit alerts.
Features:
• Free PC-to-PC calls* — regular phones for dirt cheap
• Personalize Messenger with fun plug-ins
• Listen to free Yahoo! Music LAUNCHcast radio
• Instant messaging
• Drag and drop photo and file sharing
• Share IMs from your mobile phone
• Share live video with your webcam
• Use fun Emoticons, Audibles, and Avatars
• Catch up on friend's lives with Yahoo! 360° built right in

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neteagle
Publisher Desvription;
NETEagle is a tool that optimizes your modem connection. Your internet connection can be optimized up to 200% or higher by using NETEagle. NETEagle also makes your dial-up connection more stable and more resistant to hang-up’s and disconnects. This means you can download and surf the internet faster than ever before. NETEagle supports all current Windows versions (i.e. Windows 95/98/98SE/ME/2000/XP/2003/Vista), and works with any internet connection like 14.4/28.8/33.6/56 Kb, ISDN, cable, DSL, ADSL, LAN, wireless and satellite modems. No installation or modification needs to be made to your hardware.
NETEagle optimizes Internet/Network related settings on your end of the connection (your PC) as well as several configuration files. However, those are not the only changes made to your computer. NETEagle also allocates a small portion of your computer´s memory to the processor to process data coming from and to your modem allowing for faster throughput. NETEagle has been tried and tested on numerous machines and has been found to work over 99% of the time. Increase your download speeds and stop dealing with slow internet connections when playing online games, streaming music, audio and video with NETEagle.
NETEagle is quite easy to use and understand. With a few mouse button clicks and setting changes the application is ready to work. After the settings have been made, you will need to reboot your computer and your computer´s modem will be ready to use at optimal performance. Note that it is a program that optimizes your end of the connection, and you will still be dependent on the feed that your ISP provides.

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skype
Publisher Description ;
Skype is free and simple software that enables you to make free calls anywhere in the world in only minutes. Skype uses innovative P2P (peer-to-peer) technology to connect you with other users. It is quick and easy to install and offers several features, including SkypeOut calling from Skype to regular and mobile phones worldwide, free conference calling, and secure file transferring. Skype calls have better sound quality than your regular phone and are highly secure, with end-to-end encryption.
Features:
• Free Skype-to-Skype calls.
• Call phones and mobiles, send SMS.
• Free instant messaging.
• Voicemail.
• Free video call.
• Forward calls to a phone when you're offline.

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ICQ
Publisher Description ;
ICQ is a revolutionary, user-friendly Internet tool that informs you who´s on-line at any time and enables you to contact them at will. No longer will you search in vain for friends & associates on the net. ICQ does the searching for you, alerting you in real time when friends & colleagues sign on. You can chat, send messages, files and URL´s, play games or use it as the perfect business tool to find and contact associates in realtime through the internet. This release includes ICQPhone which allows users to make pc-to-pc and pc-to-phone calls.
Features include:
• Ability to send wireless-pager messages
• View up-to-date information on ICQ channels
• Integrate ICQ with Outlook
• Offline reminder
• Add non ICQ Contacts
• ICQ SMS service
• People Search by keyword or text
• Quick Link from Message Window to User´s Unified Messaging Center
• Add and Find Users buttons
• Firewall Detection: Use ICQ at Work
• Improved Windows XP integration
• Set Alert & Accept Sounds per User
• Better Spam Protection & More
• ICQ Lite Compatibility!
• Improved - Check Your Email Account on the Server!
• Better XP Integration!
• Search Google from the ICQ Window!
• Improved Outlook Integration!
• Firewall Detection: Use ICQ at Work!
• People Search: By Keyword or Free Text!
• Add and Find Users Buttons
• Quick Link from Message Window to User´s Unified Messaging Center
• Set Alert & Accept Sounds per User!

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FreeDM
Publisher Description ;
Using power of this free download manager and accelerator you can retrieve files and complete websites up to 600% faster than before. It utilizes the entire bandwidth of your Internet connection even if you download from slow web sites.
Features of the download manager include: integration with Internet Explorer, Opera, Mozilla and FireFox, powerful scheduler, downloading from mirrors, adjusting traffic usage, ZIP file and audio/video preview.
Features:
  • Free Download Manager (FDM) offers you a vast variety of options to control and schedule your downloads. This is a light-weight but powerful download manager.
  • FDM can resume your broken download so that you needn't start it from the beginning after casual interruption. You can resume unfinished download from the moment when it was interrupted. Also this program warns you if resuming isn't supported by the servers. It allows you to make a decision about the downloading. So with FDM you save your time and money.
  • FDM allows you to limit the downloading speed. There are 3 modes of network usage: Light, Medium and Heavy.
  • Capability to split download into several sections allows you to increase download speed up to 600%.
  • FDM can connect to the Internet at a set time, download the files you want, launch any program, disconnect or shut down your computer when it's done.
  • This download manager allows you to specify the settings of network usage, such as login and password, maximum number of connections, default group, etc. So you can avoid adjusting these settings every time you need to create new download from the server.
  • Also you can download the whole web sites from the remote server. You can adjust FDM to download files with the extensions you have specified.
Free Download Manager 3.0 features numerous tweaks and innovations, such as prioritized and partial torrent downloads, support for Chrome and Safari web browsers, avast! Antivirus, multifile metalinks, FDM plugins, and many more.
The new structure of FDM settings and a number of other optimizations will surely contribute to its handiness, shaping a neat and fresh impression of the familiar program.

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blogbridge
Publisher Description ;
BlogBridge is a news feed and blog aggregation system. Not only will BlogBridge let you subscribe to your favorite RSS feeds, it will also help you sort through your existing feeds and help you discover new feeds.
It also comes with a server-based service that will let you synchronize all your feeds across multiple computers, and even maintain your read/unread status across those computers.
Feeds:
• Subscribe from url and from drag and drop
• Suggested list of Feeds
• BlogStarz Recommendations and Ratings
• Sort Feeds by BlogStarz, Unread, Keyword matches
• Filter Feeds by BlogStarz, Unread, Keyword matches
• Community info: Country and other community tags
• Article purge limit
Articles:
• Keyword highlighting
• Undiscovered and Discovered Feed highlighting
• Unread handling: go to next unread, mark all as read, etc.
• View Article: Full, Brief and Headline only
• Show Articles: All, Unread only, and Keyword matching only
• Analyze URL to locate the associated Feed
• Group articles by date
Guides:
• Drag and Drop
• Suggested Feeds
• Customized Icons
BlogBridge Community Service:
• Synchronize subscriptions and preferences between multiple computers
• Synch Now, Only Load and Only save options
• Support Feed discovery and caching
• Rich text and graphics display
• Import and Export to OPML
• Settable Keywords, external browser, UI Themes
• Automatic mark as read options
• Customizable BlogStarz weights

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Zone Alarm Free
Publisher Description ;
Keep hackers and data thieves out of your computer with ZoneAlarm, the PC firewall that protects against Internet-borne threats like worms, Trojan horses, and spyware. ZoneAlarm provides the basic protection individuals need to secure their PC and keep their valuable information private.
ZoneAlarm barricades your PC with immediate and complete port blocking. And, then runs in Stealth Mode to make your PC invisible on the Internet - if you can´t be seen, you can´t be attacked.
Includes a getting started tutorial which explains controls and alerts to get you up and running quickly. And, to keep you confident that you´re always protected, intuitive color-coded alerts rate security risks - in real time.
ZoneAlarm is free for individual and not-for-profit charitable entity use (excluding governmental entities and educational institutions).
Note: This new installer support Windows 2000/XP/Vista. Once you download the small installer, you will have to option to select "Windows 2000/XP" or "Vista". The installer will then download the appropriate files for your Operating System. Total download size is 27MB.

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zip password finder
Publisher Description ;
ZIP password finder is a completely free tool to recover zip archive passwords.
Features several functions/attacks, a nice, easy to use interface and $0 price which makes it the top choice for .zip password recovery.

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Ashampoo IP Spam Block Internet
Publisher Description ;
A growing number of Internet users are complaining about a new kind of popup advertising windows that suddenly appear on their screens. This new kind of spam, known as "IP spam" or "net spam", is generated through the internal Windows® messaging service, which is actually a tool provided to enable network administrators to send messages to multiple users via the network. (It shouldn`t be confused with the Windows® Messenger instant messaging program, which is completely different.)
Important:
This tool is only for Windows® NT, 2000 and XP, you can`t use it to switch off the messaging service under Windows® 95, 98 or Me.
Here is how to de-activate it on these systems (please note that you should only do this if your system is not integrated into a local network):
• Click on the "Start" button in your task bar
• Select "Settings"/"Control Panel"/"Network"
• Click on "File and printer accessibility in Microsoft® networks"
• Select "Delete"

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SpamFighter Standard Software
Publisher Description ;
SPAMfighter is an anti-spam/phishing tool for Outlook/Express, Windows Mail, Thunderbird. Whenever new mail arrives, it will automatically be scanned by the SPAMfighter server.
If it´s spam, it will be moved to a spam folder. Join over 6 million SPAMfighters across the globe with a clean inbox. Languages: English, German, French, Spanish, Danish, Suomi, Chinese, Japanese, Russian, Swedish, Norwegian, Dutch, Italian, Greek, Bulgarian, Czech, Thai.

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The software that permits the user to navigate the World Wide Web and view HTML-encoded documents is called a browser. It interprets the HTML tags in a document and formats the content for screen display. Since HTML is an accepted standard, anyone can build a browser without concerning themselves with what form various documents will assume, unlike documents produced by typical word processors, which must be translated into a different format if another word processing application is used.
Most sites on the World Wide Web adhere to HTML standards and, because HTML is easy to use, the World Wide Web has grown rapidly.
HTML continues to evolve, however, so browsers must be upgraded regularly to meet the revised standards.
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Extensible Markup Language, text format, commonly known as XML, created to structure, store, and send electronic information, especially on the World Wide Web. XML is similiar to Hypertext Markup Language (HTML, which is used to created pages on the web. The main difference between the two is that HTML determines how web pages look where as XML categorizes information on a Web Page.
Many Companies are developing specific XML document types to support the electronic exchange information related to their business. The Use XML is popular for business to business communication because it allows to companies to create XML tags unique to their industry. For example, in the book industry book publishers and booksellers might choose to define their own XML tags for information about authors, titles, and publication dates for the information they exchange. Similarly, an automaker and an auto dealer might choose to define their own unique tags to identify car models, body styles, and price. This type of business application software is expected to make business transactions over the Web more cost-efficient and productive.
Source Microsoft encarta 2009
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Wolfwave
Publisher Description ;
ACDSee Photo Manager 2009 lets you quickly view and find photos, fix flaws, and share your favorites through e-mail, prints and free online albums.
Never wait for an image to open again - ACDSee 2009 is the fastest viewing software around.Fill your screen with photos, zoom through your thumbnails, and view photos at full size. Plus, instantly see e-mail attachments or files on your desktop, with ACDSee's handy Quick View feature.
Stay on top of your entire collection. Drag and drop photos into Windows® file folders, add keywords and ratings, edit your metadata, and create your own categories. Assign images to as many categories as you like without taking up more space on your computer. Rename, rotate and resize groups of photos at once.

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Publisher Description ;
The K-Lite Codec Pack is a collection of DirectShow filters, VFW/ACM codecs, and tools. Codecs and DirectShow filters are needed for encoding and decoding audio and video formats. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your audio and movie files. With the K-Lite Codec Pack you should be able to play all the popular audio and video formats and even several less common formats.
The K-Lite Codec Pack has a couple of major advantages compared to other codec packs :
It is updated frequently. So it is always up-to-date with the newest and/or best components.
All components have been carefully selected for specific purposes. It is not just a random bunch of stuff thrown together.It is very user-friendly and easy to use.
Works great with Windows Media Player and Windows Media Center. But also with all other DirectShow players, such as Media Player Classic, BS.Player, ZoomPlayer, and others.
The installation is fully customizable, meaning that you are able to install just those components that you really want.
The pack has many options, which allows you to tweak it to your own specific needs and preferences.
Uninstallation removes everything that was installed by the pack. Including all registry keys. All changes are properly undone.
It is extremely easy to make a fully customized unattended installation with the integrated wizard.
It does not contain any codecs or filters that are known to be bad, buggy or unstable. In fact, the installer is able to detect and disable several known troublemakers.
It tries to avoid potential conflicts with other codecs installed on your computer. The installer is able to detect and remove over 100 different codec and filter packs.
The installer is able to detect broken codecs and filters on your system, and helps you to remove them.
It is a very complete package, containing everything you need to play your movies.
The pack has options to activate thumbnail generation in Windows Explorer for several popular video file formats, which are by default not thumbnailed in Explorer.
The pack automatically configures Media Center to recognize all common audio and video file formats, so that such files show up in your media library.
This pack has a huge user base. This means that problems are found and resolved quickly.
There are different variants of the pack. From very small to large.
The pack is suitable for both novice and expert users.

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Publisher Description ;
Many people know from their own experience that it's not easy to install an Apache web server and it gets harder if you want to add MySQL, PHP and Perl.
XAMPP is an easy to install Apache distribution containing MySQL, PHP and Perl.
XAMPP is really very easy to install and to use - just download, extract and start.
The distribution for Windows 2000, 2003, XP and Vista. This version contains: Apache, MySQL, PHP + PEAR, Perl, mod_php, mod_perl, mod_ssl, OpenSSL, phpMyAdmin, Webalizer, Mercury Mail Transport System for Win32 and NetWare Systems v3.32, Ming, JpGraph, FileZilla FTP Server, mcrypt, eAccelerator, SQLite, and WEB-DAV + mod_auth_mysql.

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Publisher Description ;
Top internet accelerator (according to PC Magazine), a network settings optimizer to speed up your existing Dial-Up Modem, DSL, Cable, Wireless, LAN, High-speed internet connections.
SpeedConnect Internet Accelerator is a powerful Windows application designed to optimize your network connection and speed up all your internet activities. This translates into a faster internet connection, faster browsing and email, faster downloads, faster online gaming, improved Skype connection.The speed of your network connection doesn't just depend on the speed of your hardware. Windows is an operating system that is designed to work on a variety of different hardware and network setups. Because of the abstract nature of the operating system, it cannot be optimized for user-specific hardware setups.
Depending on the type of network connection you have, you might be able to tweak your connection so that the speed of your Internet, as well as your local area network, will be faster. By changing the System Registry and optimizing the TCP/IP parameters, SpeedConnect can fine-tune the values to take advantage of more reliable, faster Internet connections.

Download here or here
Publisher Description ;
Traffic shaping best for Broadband DSL & Cable, Modem, ISDN, Mobile, FileSharing, Games, Streaming Media (VOIP). FeaturesLow Ping, Prioritising Programs, Prioritising Protocols, Online Budgets, Firewall.

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Publisher Description ;
Things move quickly online, and we’ve beefed up the engine that runs Firefox to make sure you can keep up: Firefox 3.5 is more than twice as fast as Firefox 3, and ten times as fast as Firefox 2.As a result, Web applications like email, photo sites and your favorite social networks will feel snappier and more responsive.

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Browser, in computer science, a program that enables a computer to locate, download, and display documents containing text, sound, video, graphics, animation, and photographs located on computer networks. The act of viewing and moving about between documents on computer networks is called browsing. Users browse through documents on open, public-access networks called internets, or on closed networks called intranets. The largest open network is the Internet, a worldwide computer network that provides access to sites on the World Wide Web (WWW, the Web).
Browsers allow users to access Web information by locating documents on remote computers that function as Web servers. A browser downloads information over phone lines to a user’s computer through the user’s modem and then displays the information on the computer. Most browsers can display a variety of text and graphics that may be integrated into such a document, including animation, audio and video. Examples of browsers are Netscape, Internet Explorer, and Mosaic.Browsers can create the illusion of traveling to an actual location in virtual space (hyperspace) where the document being viewed exists. This virtual location in hyperspace is referred to as a node, or a Web site. The process of virtual travel between Web sites is called navigating.
Documents on networks are called hypertext if the media is text only, or hypermedia if the media includes graphics as well as text. Every hypertext or hypermedia document on an internet has a unique address called a uniform resource locator (URL). Hypertext documents usually contain references to other URLs that appear in bold, underlined, or colored text. The user can connect to the site indicated by the URL by clicking on it. This use of a URL within a Web site is known as a hyperlink. When the user clicks on a hyperlink, the browser moves to this next server and downloads and displays the document targeted by the link. Using this method, browsers can rapidly take users back and forth between different sites.
Common features found in browsers include the ability to automatically designate a Web site to which the browser opens with each use, the option to create directories of favorite or useful Web sites, access to search engines (programs that permit the use of key words to locate information on the Internet, an internet or an intranet), and the ability to screen out certain types of information by blocking access to certain categories of sites.
A browser’s performance depends upon the speed and efficiency of the user’s computer, the type of modem being used, and the bandwidth of the data-transmission medium (the amount of information that can be transmitted per second). Low bandwidth results in slow movement of data between source and recipient, leading to longer transmission times for documents. Browsers may also have difficulty reaching a site during times of heavy traffic on the network or because of high use of the site.
The most commonly used browsers for the Web are available for free or for a small charge and can be downloaded from the Internet. Browsers have become one of the most important tools—ranking with e-mail—for computer network users. They have provided tens of millions of people with a gateway to information and communication through the Internet.Source Microsoft Encarta 2009.
Computers store all information as binary numbers. The binary number system uses two binary digits, 0 and 1, which are called bits. The amount of data that a computer network can transfer in a certain amount of time is called the bandwidth of the network and is measured in kilobits per second (kbps) or megabits per second (mbps). A kilobit is 1 thousand bits; a megabit is 1 million bits. A dial-up telephone modem can transfer data at rates up to 56 kbps; DSL and cable modem connections are much faster and can transfer at a few mbps.The Internet connections used by businesses can operate at 45 mbps or more, and connections between routers in the heart of the Internet may operate at rates from 2,488 to 9,953 mbps (9.953 gigabits per second). The terms wideband or broadband are used to characterize networks with high capacity, such as DSL and cable, and to distinguish them from narrowband networks, such as dial-up modems, which have low capacity.Source Microsoft Encarta 2009.
Although the World Wide Web is the most popular application, some older Internet applications are still used. For example, the Telnet application enables a user to interactively access a remote computer. Telnet gives the appearance that the user’s keyboard and monitor are connected directly to the remote computer. For example, a businessperson who is visiting a location that has Internet access can use Telnet to contact their office computer. Doing so is faster and less expensive than using a dial-up modem.
Another application, known as the File Transfer Protocol (FTP), is used to download files from an Internet site to a user’s computer. The FTP application is often automatically invoked when a user downloads an updated version of a piece of software. Applications such as FTP have been integrated with the World Wide Web, making them transparent so that they run automatically without requiring users to open them. When a Web browser encounters a URL that begins with ftp:// it automatically uses FTP to access the item.Network News discussion groups (newsgroups), originally part of the Usenet network, are another form of online discussion. Thousands of newsgroups exist, on an extremely wide range of subjects. Messages to a newsgroup are not sent directly to each user. Instead, an ordered list is disseminated to computers around the world that run news server software. Newsgroup application software allows a user to obtain a copy of selected articles from a local news server or to use e-mail to post a new message to the newsgroup. The system makes newsgroup discussions available worldwide.
A service known as Voice Over IP (VoIP) allows individuals and businesses to make phone calls over the Internet. Low-cost services (some of them free) often transfer calls via personal computers (PCs) equipped with microphones and speakers instead of the traditional telephone handset. But a growing number of services operate outside the PC, making calls via a special adapter that connects to a traditional telephone handset. The calls still travel over the Internet, but the person using the special adapter never has to turn on his or her computer. Thousands now use such VoIP services in lieu of traditional phone service. VoIP services are not subject to the same government regulation as traditional phone service. Thus, they are often less expensive.Source Microsoft Encarta 2009.
Electronic mail, or e-mail, is a widely used Internet application that enables individuals or groups of individuals to quickly exchange messages, even if they are separated by long distances. A user creates an e-mail message and specifies a recipient using an e-mail address, which is a string consisting of the recipient’s login name followed by an @ (at) sign and then a domain name. E-mail software transfers the message across the Internet to the recipient’s computer, where it is placed in the specified mailbox, a file on the hard drive. The recipient uses an e-mail application to view and reply to the message, as well as to save or delete it. Because e-mail is a convenient and inexpensive form of communication, it has dramatically improved personal and business communications.In its original form, e-mail could only be sent to recipients named by the sender, and only text messages could be sent. E-mail has been extended in two ways, and is now a much more powerful tool. Software has been invented that can automatically propagate to multiple recipients a message sent to a single address. Known as a mail gateway or list server, such software allows individuals to join or leave a mail list at any time. Such software can be used to create lists of individuals who will receive announcements about a product or service or to create online discussion groups.
E-mail software has also been extended to allow the transfer of nontext documents, such as photographs and other images, executable computer programs, and prerecorded audio. Such documents, appended to an e-mail message, are called attachments. The standard used for encoding attachments is known as Multipurpose Internet Mail Extensions (MIME). Because the Internet e-mail system only transfers printable text, MIME software encodes each document using printable letters and digits before sending it and then decodes the item when e-mail arrives. Most significantly, MIME allows a single message to contain multiple items, enabling a sender to include a cover letter that explains each of the attachments.Source Microsoft Encarta 2009.
Internet applications, such as the Web, are based on the concept of client/server architecture. In a client/server architecture, some application programs act as information providers (servers), while other application programs act as information receivers (clients). The client/server architecture is not one-to-one. That is, a single client can access many different servers, and a single server can be accessed by a number of different clients.Usually, a user runs a client application, such as a Web browser, that contacts one server at a time to obtain information. Because it only needs to access one server at a time, client software can run on almost any computer, including small handheld devices such as personal organizers and cellular telephones. To supply information to others, a computer must run a server application. Although server software can run on any computer, most companies choose large, powerful computers to run server software because the company expects many clients to be in contact with its server at any given time. A faster computer enables the server program to return information with less delay.Source Microsoft Encarta 2009.
To be connected to the Internet, a computer must be assigned a unique number, known as its IP (Internet Protocol) address. Each packet sent over the Internet contains the IP address of the computer to which it is being sent. Intermediate routers use the address to determine how to forward the packet. Users almost never need to enter or view IP addresses directly. Instead, to make it easier for users, each computer is also assigned a domain name; protocol software automatically translates domain names into IP addresses. See also Domain Name System.Users encounter domain names when they use applications such as the World Wide Web. Each page of information on the Web is assigned a URL (Uniform Resource Locator) that includes the domain name of the computer on which the page is located. Other items in the URL give further details about the page. For example, the string http specifies that a browser should use the http protocol, one of many TCP/IP protocols, to fetch the item.Source Microsoft Encarta 2009.
internet topologiAll information is transmitted across the Internet in small units of data called packets. Software on the sending computer divides a large document into many packets for transmission; software on the receiving computer regroups incoming packets into the original document. Similar to a postcard, each packet has two parts: a packet header specifying the computer to which the packet should be delivered, and a packet payload containing the data being sent. The header also specifies how the data in the packet should be combined with the data in other packets by recording which piece of a document is contained in the packet.
A series of rules known as computer communication protocols specify how packet headers are formed and how packets are processed. The set of protocols used for the Internet is named TCP/IP after the two most important protocols in the set: the Transmission Control Protocol and the Internet Protocol. TCP/IP protocols enable the Internet to automatically detect and correct transmission problems. For example, if any network or device malfunctions, protocols detect the failure and automatically find an alternative path for packets in order to avoid the malfunction. Protocol software also ensures that data arrives complete and intact. If any packets are missing or damaged, protocol software on the receiving computer requests that the source resend them. Only when the data has arrived correctly does the protocol software make it available to the receiving application program, and therefore to the user.Hardware devices that connect networks in the Internet are called IP routers because they follow the IP protocol when forwarding packets. A router examines the header in each packet that arrives to determine the packet’s destination. The router either delivers the packet to the destination computer across a local network or forwards the packet to another router that is closer to the final destination. Thus, a packet travels from router to router as it passes through the Internet. In some cases, a router can deliver packets across a local area wireless network, allowing desktop and laptop computers to access the Internet without the use of cables or wires. Today’s business and home wireless local area networks (LANs), which operate according to a family of wireless protocols known as Wi-Fi, are fast enough to deliver Internet feeds as quickly as wired LANs.
Increasingly, cell phone and handheld computer users are also accessing the Internet through wireless cellular telephone networks. Such wide area wireless access is much slower than high-capacity dedicated, or broadband, access, or dial-up access. Also, handheld devices, equipped with much smaller screens and displays, are more difficult to use than full-sized computers. But with wide area wireless, users can access the Internet on the go and in places where access is otherwise impossible. Telephone companies are currently developing so-called 3G—for “third generation”—cellular networks that will provide wide area Internet access at DSL-like speeds.Source Microsoft Encarta 2009
The term Internet access refers to the communication between a residence or a business and an ISP that connects to the Internet. Access falls into three broad categories: dedicated, dial-up, and wireless. With dedicated access, a subscriber’s computer remains directly connected to the Internet at all times through a permanent, physical connection. Most large businesses have high-capacity dedicated connections; small businesses or individuals that desire dedicated access choose technologies such as digital subscriber line (DSL) or cable modems, which both use existing wiring to lower cost. A DSL sends data across the same wires that telephone service uses, and cable modems use the same wiring that cable television uses. In each case, the electronic devices that are used to send data over the wires employ separate frequencies or channels that do not interfere with other signals on the wires. Thus, a DSL Internet connection can send data over a pair of wires at the same time the wires are being used for a telephone call, and cable modems can send data over a cable at the same time the cable is being used to receive television signals. Another, less-popular option is satellite Internet access, in which a computer grabs an Internet signal from orbiting satellites via an outdoor satellite dish. The user usually pays a fixed monthly fee for a dedicated connection. In exchange, the company providing the connection agrees to relay data between the user’s computer and the Internet.
Dial-up is the least expensive access technology, but it is also the least convenient. To use dial-up access, a subscriber must have a telephone modem, a device that connects a computer to the telephone system and is capable of converting data into sounds and sounds back into data. The user’s ISP provides software that controls the modem. To access the Internet, the user opens the software application, which causes the dial-up modem to place a telephone call to the ISP. A modem at the ISP answers the call, and the two modems use audible tones to send data in both directions. When one of the modems is given data to send, the modem converts the data from the digital values used by computers—numbers stored as a sequence of 1s and 0s—into tones. The receiving side converts the tones back into digital values. Unlike dedicated access technologies, a dial-up modem does not use separate frequencies, so the telephone line cannot be used for regular telephone calls at the same time a dial-up modem is sending data. Source Microsoft Encarta 2009

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