I am getting a custom pc at newegg for around $2,000 and I was wondering if I should get XP or Vista? I want to play games like: Rainbow Six: RavenShield ( I know its old), BF2, LOTR: BFME 1 & 2, Rainbow Six: Vegas, and all the new games coming out (Crysis also). What windows allow me to have all the work and which is the best for gaming?