http://support.apple.com/kb/HT5634 I'm still running Lion 10.7.5 on my 2008 Mac Pro, and was hoping that Windows 8 would work with a set of updated Boot Camp drivers. ARGH! I'm guessing that it works "unofficially" though. Is anyone running Windows 8 on a 3,1? Has anyone actually tried to install the Boot Camp 5 drivers?