My girlfriend recently bought me a new pc. An Acer Aspire M5641 with a quadcore intel q8200, 2gb of ddr2, and a geforce 9300ge 256mb videocard. I'm thinking to upgrade the graphics because its not really that good. I wanted to build my own but she insisted that she didn't want me spnding too much time building it so i'm stuck with this acer. It has an 18.5" lcd with 1366x768 max resolution. I intend toplay games like mirror's edge, assassin's creed, gta4, sims 3, far cry2 and the like. what would you recommend for my video card upgrade. ny budget would be around 100-180$. Thanks