I currently have a PC I use mostly for browsing/office work that I'm looking to upgrade into a gaming machine. I have an AMD X2 4600+, 2GB ram, GEFORCE 8500GT video card, and 300w power source. I have about $150 to spend on a new video card, and then I'm planning on upgrading my power source and adding 1 gig of ram seperately. What would you guys suggest I buy for some mid-level gaming on a 24" Dell monitor? Would the 8800GT be my best bet?