Tools to query your system

CPU-Z
Get detailed information about some of teh main devices on your system. Nice little download.

Link:
http://www.cpuid.com/cpuz.php


Belarc Advisor
This is one that everyone has heard of. From their website:

builds a detailed profile of your installed software and hardware, missing Microsoft hotfixes, anti-virus status, CIS (Center for Internet Security) benchmarks

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


AIDA32
This is a great freeware tool for getting all kinds of information about your system. The download is old but still works. Reason no further development was done is because AID32 became Everest (see below).

Link:
http://www.sofotex.com/AIDA32-download_L9326.html


Everest
They used to be one of the top tools for getting the hardware information of your system and they even offered a free edition. They are still great but they no longer offer the free edition. May still be worth checking out since the 19.95 or 29.95 price tag is not too bad.

Link:
http://www.lavalys.com/