What are good parts to get for a gaming computer?

looks like you will need to go with a barebones kit. With a intel core quad cpu already installed. Your best bet is a western Digital internal hard drive off of ebay. Anything Nvidia is a good graphics card, you probably want one with atleast 512 mb of video ram. 4 gigs off of crucial.com with be about $50. I think your going to have trouble staying in your price range, but you can do it if you find the right deals.