I had trouble installing a piece of software recently and had to contact the developers for help. They recommended some steps and then asked me to send some info if that didn't help. They wanted me to send a text file with my system information to let the dev guys know my hardware set-up, installed drivers, etc.
Turns out that the System Information window has heaps of other useful info it. If you ever have q's about your system, you might be able to find some answers by looking at it.
How to find your System Information:
Click Start> click Run> type in "msinfo32" and hit Enter.* Use File> Export to create a text file version of it.