That would be the way to go, but seriously speaking, don't install XP 64. I had it on my Core 2 desktop for a while, and there were so many programs that didn't work correctly with it, like the UT3 demo, Armagetron Advanced, the Halo 2 XP loader, and some other stuff. In addition, it crashed pretty often. I went back to XP 32 and I haven't had a problem since.