Hi I have read the requirements from saying that 'authentic' retail XP/Vista/Win7 media is required, googled around for any extra information, etc. I am reading here that OEM copies seem to install. I tried with bootable/installable images of XP & Vista that I downloaded from my M$ Developer subscription and when Bootcamp tried to perform the install the screen just cycled through , '?' and folder icons until I powered off the MPB. Obviously I really dont want to go and buy a retail copy when I have licensed developer copies available. Have I missed a trick or is it just impossible with anything other than retail install media? Thanks Carl.