I have no idea if this software actually works, or if it does anything remotely like what it claims to do. My own Windows (98) partition won't so much as boot, and I don't have a copy of XP, so I can't test that the programs.
But if you believe the site I stole these from, they'll let you generate a product key for Windows XP. I provide them here in case they're of interest to anybody. See a kuro5hin.org story for more details.
Update 30 May 02: In response to a DMCA threat letter, the key generating software has been removed while I review what, if anything, it actually does and decide what future action to take.
Apache/2.2 Server at mlcastle.net Port 80Name Size Description
Parent Directory -
SAD_XP_All_VERSION 1.1.zip 804 SAD Team Crack (?)
all_xp_suite_keygen.zip 804 WinXP/OfficeXP Key Generator
files.txt 2.3M (Alleged) list of files in the Windows 2000 Source Code
threat.html 4.0K