INSTALL W2K TO 2ND/ANY PARTITION BEFORE YOU RESINATLL XP,[IT WILL KILL THE XP, SO BACK UP WITH GHOST BEFORE YOU DO IT] THEN YOU HAVE DUAL BOOT,TEST ANYTHING WITH W2K, VERY GOOD WHEN YOU GET INTO OS PROBLEM OR HARDWARE DIAGNOSIS, IS IT OS RELATED OR H/W PROBLEM, NOT TO MENTION YOU GOT A BACKUP OS .

http://www.microsoft.com/windowsxp/.../multiboot.mspx