Ok So I have the older 2.2 ghz, 4gb ram ( upgraded, same frequency so its all good) 128mb video ram. I need to upgrade ( I know) and am building my new computer soon. But Because of the military im moving right now and don't want to be stuck on a 20 hour flight with nothing to do. SO I want to put fallout 3 on my MacBookPro. So is my rig fast enough? Im not looking for the greatest graphics cause I know it won't do it. But if I did do this will I have any lag issues with the quality on low/ medium? Oh ad what vista should I get 32 bit or 64 bit and does it make a difference? Thanks, and much love to all you other tech enthusiasts!