Cactus asked from you have you tried booting from the Window XP SP1 CD? BTW, is your CD bootable? How old is your BIOS, because you are unlucky if it hasn't got Boot Sequence supporting your CDROM.
Try to quote one of our suggestions and share your experience on what happened to those suggestions.
Wishing you good luck and welcoming you to BetaONE,
Cul8r,
Yours,
McoreD