Sorry for another XP vs Vista thread, but this one is a little more specific to me. Just purchased an "old" macbook pro refurb(2.4Ghz,256MB 8600 GT) and am planning on upgrading it to 4GB of ram. My question is this: XP 32, XP 64, Vista 32, or Vista 64? There are a lot of different opinions on the forums but my main concerns are this: - Can XP support over 2GB of ram? - is vista a lot less efficient than XP - is my graphics card even dx10? if so does that make vista a must? - whats the deal with the driver issues I'm hearing about with XP(seen a lot of different opinions on this) ill mostly be doing some light gaming / some Windows apps with bootcamp /vmware fusion. Thanks in advance for your opinions and advice.