Bootdisk.com: When was the last time you needed a Windows 95 boot disk but didn't have a Windows 95 machine lying around? Bootdisk.com offers tips, tweaks, files, boot disks, instructions, utilities, links, patches, and updates for advanced DOS and Windows users.

Download.com: This handy site from CNET offers access to more than 20,000 Windows, Macintosh, DOS, Linux, Palm OS, Windows CE, and BeOS software downloads.

Driverguide: Need a driver? This site seldom fails to deliver a driver for anything you may encounter in the field.

Driverzone.com: Go here to find drivers for everything from printers and scanners to video cards and modems. Also look here for reviews, utilities, component manufacturer information and guides.

Eventid.net: Numerous event or error messages occur when you are troubleshooting systems, but what do they mean? Look here for guidance.

PC Drivers HeadQuarters: This site provides links to device manufacturer Web sites and prides itself on locating the latest drivers for your computer.

Softpedia: This extremely well-organized encyclopedia of software is constantly updated with drivers, games, Windows- and Mac-specific utilities, and software.

Sysinternals: At Sysinternals, you’ll find advanced utilities, technical information, and source code for all versions of windows.

The Tech Spot: The Tech Spot offers game downloads, OS updates, device drivers, and miscellaneous utilities.

Tucows: This is a useful site for finding downloads of full programs, utilities, games, and mail clients. All software is rated in cows.

Virtual Dr: Wide-ranging discussion groups on this site offer help and advice, as techies of all kinds share their knowledge and problems.

Astalavista Group: Don't let hackers, crackers, phone phreaks, or script kiddies catch you off guard. Find the latest news from the IT underground on this site.

CERT Coordination Center: This is Carnegie Mellon Software Engineering Institute’s center for Internet security expertise.

Drizzle.com: This is the unofficial guide to wireless security issues—a fascinating page and a great starting point for exploring this topic.

Spam Abuse: This site has been helping the public fight spam since 1996. A good place to go to learn how to most effectively protect your organization from this menace.

Spywareinfo.com: Learn how to protect your users from the growing threat of spyware and stay informed about the latest threats and techniques for averting them.

Symantec Antivirus Research Center: This site is essential for users of Norton Antivirus software. In fact, even if you don't use Norton Antivirus, it's one of best sources of virus information on the Web.

Vmyths.com: Want to know if the latest virus scare is real? Vmyths.com offers straightforward info about computer virus myths, hoaxes, and urban legends.