I have a 2.2 mbp w/ 4 g ram. (I run Tiger instead of Leopard as Leopard is not recognized by my school network) I am considering Age of Conan, and am trying to decide between XP and Vista. Price is an issue, so the cheaper the better. Sub $100 is what I'm realistically looking to spend. However, I would like my system to take advantage of direct x 10 if I can (and if it's worth it), I want it to recognize all 4 gigs of ram and I would prefer it to have a smaller partition, which is a point in favor of XP. What do you guys recommend. I don't really know ANYTHING about the new service pack or if XP 64bit is worth anything and the solution to my problems... Thanks for any help.