EAW works fine on Vista 64-Bit, both the vanilla one and the Gold Pack one (I own both versions).
The vanilla FoC version does NOT work on Vista 64-Bit, I don't know about the Gold Pack one, because I always overwrite the .exe's with the ones from mike.nl. These .exe's make the FoC Gold Pack AND the Vanilla one work with 64-bit Vista. So just go with 64-bit Vista and get those .exe's, I have the files on my PC but I can't find the link anymore.
And people talking about load times and stuff, this has little to do with the processor, more with the Hard Drive you are using. I now have 2 WD Caviar Black's running in RAID 0 short stroked to 300GB and it loads pretty fast.
EDIT: Found the link, see post #54
here.
Edited by Invadious, 19 July 2009 - 06:25 PM.