Of course you can!
Partition Magic has been doing it for years. You'll need at least version 8 to do it on a NTFS formatted disk.
You must install it into XP and then run it to create the second partition.
BE CAREFULL though. It's a tech tool and should not be used by anyone without the technical expertise to use it properly.
From everything I've read here and in other forums, the word on the street (so to speak) is, "Don't put Vista on the same HD with XP".
Put it on a separate hard drive, for safety.
Good Luck,
Shadow
