So, I have windows 7 64-bit and i needed to install xp professional as a dual boot. So i Partitioned about 30gb's of memory, and then installed windows XP. Well, now It will only start windows XP. And when i go and try to change the deafault OS on startup, Windows 7 isnt listed. But now, It says there is 2 hard drives. One has W7, the other has XP, but they are on the same HD, just partiotioned. I tried to edit the bootfile, but i don't know what to put to start W7! Please Help!!