Download.com

If you're looking to get more productivity and fun from your PC, CNET's site is where you can find thousands of software, shareware, freeware and utilities titles. Software categories include: Business, Development Tools, Drivers, Education, Games, Homes & Personal, Internet, Multimedia & Design, and Utilities.

Shareware.com

This is another CNET site. This site is an easy way to find software that will increase your productivity and make your computing experience more enjoyable.

Microsoft Corp.

At this Web site you'll find fixes and patches for Microsoft products, free downloads of its products, and plenty of technical support information.

Microsoft's KnowledgeBase is an invaluable resource for finding solutions to problems that require technical support.