fully. Thats before we get on to the severe lack of software on 64bit. So 4GB of RAM is pretty much a nono. Vista uses more resources then XP. To run Vista well you need 1GB, Dual Core machine with half decent graphics, for most of us that means chucking your old machine away. As opposed to 512MB of RAM, 2Ghz CPU to run XP well. and the 'sweet spot' is roughly double the RAM for each OS. Call me a Mac fanboy if you like, I've setup XP on over 400 systems, and built over 50. At home, I use two Hi-Spec PC's built by me, I've had enough of XP, and seen how 'good' Vista is for myself. I'm not tech support, and have no qualifications to prove it as I'm self taught. But after setting up just one Powerbook, I fell in love with the Mac OS. It's simple and doesn't treat you like a child. I've seen many user's systems, and UAC or not, they will download what they want, when they want, how they want. Vista is an OS not ready for release, and why I will be waiting to see if SP1 improves things any. "Because Mac and Linux are not even smart enough to build a system worth even talking about. Just look at legit security information and you will find that even Windows XP beats Mac and Linux on security. The only reason Windows is attacked more is do to the fact