Right now running Xp pro with SP3 on my desktop. i been wanting to go with vista, but im not sure whether i should get 32 or 64 bit. My laptop has 64 bit on it and i like it alot. my desktop has a intel q9300, asus P5Q<green> motherboard. 2gigs of ram (gonna go up). and a pny 8800gts graphics card.