I am deciding to bootcamp my macbook pro because I have to use ArcEditor 9.3.1 for my Introduction to Geographic information systems class. The mbp I am using right now is in my sig(4 gb ram), so I was wondering if I need a 64 bit version or will 32 do. Also, home premium or professional? I wouldnt be using my campus network a whole lot(commute + non-degree seeking) and they require students have the professional version, but I wouldnt think I apply under that I also plan on using steam so I can get a couple strategy games on there. One more thing, how would I use the printscreen function in windows via my wired keyboard and my keyboard on my mbp? I recall seeing things like fn + f11 and alt+fn+11(for active window) Also, whats the best antivirus you would recommend for windows 7?