I am in the market for a new computer currently I have a HP a810N with the AMD 64 3300+ 2.4ghz with 1 gig pc3200 and an ATI x850 Pro. looking to upgrade to a dual core I was looking at either a 4200 x2, 4600+ x2 or something that would give me alittle more gaming performance doesn't need to be top of line.. or would a new video card improve that.