Hi Guys! This may well be a stupid question, but here goes anyway. I've just received my very first iMac -(over the moon I am!) but I need to run windows on it for certain software programs. So, I have ordered a Windows 7 64-bit Ultimate Upgrade (still waiting for delivery after 5 weeks!), which will work fine on my PC machines, BUT can I install this on my iMac under Boot Camp or in Parallels? Or do I need to first install a Windows Vista/XP version on the iMac to then upgrade?? I guess I'm hoping that I will be able to install it directly without any need to install a previous version. I currently have Windows Vista 32-bit on my PC and according to M. my Windows 7 64-bit Ultimate Upgrade will not actuallly upgrade Vista, it needs to do a complete install (probably some problem with switching from 32 to 64 bit?). If anybody could point me in the right direction with this I'd be grateful! Thanking you in advance and the season's greetings to all of you out there! GerryGilli!