i'm running 64bit with my 4gig yes, can't see it otherwise.
All these comment on here...i dunno what you guys are thinking. Sure vista needs a couple of gig IF you run aero, if you turn it off its fine on a gig. I'm running it on a del X1!!! thats 1.1m processor and 1gig of ram, turned aero off and it's fine, more than fine, its great and works perfectly.
Stop being so resistant to change is what i say. Vista is cool imo and for features there isn't much, but id' say directx10(and .1) is worthwhile if you've got a new pc.