[edit: Jarhed7276 and elroy beat me to it!]
I'm not entirely sure what you are asking, but...
I think
PC Wizard 2004 would help you find out what is 'in' your computer.
Also, I haven't tried it, but
EVEREST Home Edition might also provide some information. (The developer of a great program called 'AIDA32' has now joined Lavalys to help with the EVEREST software)
- rp