In the future OP don't ask the guys at Best Buy their opinions about computer parts, they all think "higher number = better". Most of them are console gamers and don't know jack ****. Check Tom's Hardware or Newegg for part recomendations.
I'm at work, and am in (wife checked for me) but I'm going to do all the chores before I log on. The house will be spotless before I touch the game, that way she can't nag me about being lazy when I play for 15 hours straight.