I have Boot Camp/Vista 64-bit on my Mac Pro, and for the most part everything works fine. I've been doing some music production work with Ableton Live and Reason, and I haven't really run into many issues. I've been having problems running Half-Life 2, though. I downloaded Steam, and I can run the old Half-Life with no hiccups, but every time I start up Half Life 2, I see a flash of the intro wallpaper screen and then blackness, and it'll quit and I'll see the Vista desktop again. I bought Half Life 2 Orange Box to see if that would clear anything up, but Ep 1 and Ep 2 won't load either. Googling this issue came up with a few responses, including running Half-Life 2 under "Administrator", but I haven't found that option under Steam. I'm logged into Vista as an Administrator. Also, I haven't been able to get my Aluminum Bluetooth Keyboard to work. It's a minor issue (I'm using the full-length one right now), but I have the latest Boot Camp drivers and Vista still won't find the bluetooth keyboard. Vista has found my MBP under Bluetooth, though, and the keyboard works fine under OSX. EDIT: All this is making me consider downgrading to my old WinXP. Would I have better luck there?