On the XP CD in the \Support\Tools directory, there are a lot of additional support and troubleshooting utilities. You can run SETUP from that directory to install them.
Just a few are:
diruse ---> Shows Disk Usage
dupfinder ---> Finds Duplicate files
getmac ---> Get's MAC address of the network card
hostname ---> Shows the host name of the computer
netdiag ---> Diagnoses a variety of network components
pviewer ---> Show a list of process & allows you to get a memory detail or kill any process
windiff ---> Compare files and directories
