What Video card should I get?

I want to know what kind of video card I should get. Good enough to play games like cod4 mod warfare 2 on okay/pretty good settings/fps. Nvidia or ATi, doesn't really matter. Thanks.|||ATI has the fastest cards right now the 5000 series...go to newegg and see which one is the best for what you want and want to spend. http://www.newegg.com/