Hey. Ive got Windows XP SP2 installed on my iMac using bootcamp and everything works fine. I have a copy of Windows Vista home upgade (not full verision) for my PC which i installed over the top of XP. I'm wondering whether its possible to run windows XP on the iMac and install Vista upgrade like you would on the PC? Does anyone know if this will work or not. Quite fond of my iMac and dont really want to mess it up.