I have a dual boot E-machine pc. Vista Ultimate set as master, and XP mce set as slave, pata hard drives. It works fine for me, if I want to boot in to XP, I just have to go in to boot menu and tell it 2nd option xp, it starts up fine. Now here's the only situation I've encountered. The Media Center video for Vista is the only one that gives me video, xp want play dvd's or give tv from my installed tv card! Anyone have any suggestions?