|Firstly - not the code on the XP BSOD and post back - it should give an indication as to what's wrong. Secondly, run a disk check on your drive(s) in W2K. - right-click on the drive(s), select Tools/error-checking, and tick the two boxes "automatically fix..." and "scan for....".|
Windows will schedule a run of CHKDSK when you reboot into W2K.
Lastly - your XP and W2K must be installed on separate partitions/drives - this IS the case, I trust?