Windows XP's alternate System Information tool

Clarifications

It is not downloadable.
It is part of Windows XP.
It is part of the built-in Help & Support Center.

Read this article and follow steps 1 through 4 at the top:
http://blogs.techrepublic.com.com/window-on-windows/?p=739

http://www.alexnolan.net/software/sysspec.htm

Please post back if you have anymore problems or questions.

It's a free utility to access a detailed profile of your installed software and hardware, missing Microsoft hotfixes, anti-virus status, CIS (Center for Internet Security) benchmarks, and displays the results in your Web browser.

http://www.belarc.com/free_download.html