So I installed W7 on the UMB in my signature. I have 4 gigs of ram on the macbook, 2.4 ghz processor. I've allocated from 2 up to 2.5 gb ram for W7 to run, but it runs TERRIBLY slow. Like Can't-use-it slow; freezing up constantly. I got the 64 bit version. Should I have gotten the 32 bit version? Is there anything I can do to make it run fast?? OH, and I'm running the newest version of Fusion.