I use it for a "secure" version of XP.. Ridding myself of un-necessary apps/services.

I then can install M$ alternative programs..

Browser => Mozilla/Netscrape
Office Suite => Open Office, Smart Suite
Media player => Real Audio, and open source alternatives
MS Services for UNIX => gives me full UNIX System compatibilty, NFS..(MS gives this away just in case you didn't know..)

This is just a few.. It is really amazing how much faster XP loads with out all other junk installed..

It almost as fast as UNIX/Linux/Solaris..