I'm gonna get a new MBP when the new ones are released, with maximized specs. Highest amount of RAM etc etc ... I have to run windows on the machine as well for school. I'll be using windows for two reasons: 1) running 3D modelling apps like AutoCAD, Revit etc, which are - from what I've heard - quite intense. 2) running games like Assassin's Creed (in other words: graphically intense) So, which windows OS should i choose? Vista 32? Vista 64? XP 32? XP 64?