Here is an easy way to produce documentation on your XP system. Open a command prompt and change directories to C:\Program Files\Common Files\Microsoft Shared\Msinfo directory and type:

MSinfo32 /Report C:\msinfo32.txt /Computer [name]

It dumps the data used in the system info mmc to a text file. This method also works on remote systems.
Pretty cool for system documentation.
Obviously this is easily automated for a series of systems using a batch file.