two hard drives
in mormal case, there is no problem to work with two hard drives on one system. "first" install winxp on ide-drive - "then" 64studio on sata. 64studio checks that there is an other system on computer, and bind winxp automatic in his grub-bootloader. after rebooting, you will find your choice. i working with 64studio, and it is one of the fastest and best linux64-multimedia-system.
have fun - loop