So i built a computer last year to use as a media center PC I am finding myself wanting to some gaming. Currently I use a GF 6150 (integrated) and I know that is not enough for what a want. Typically I will be playing games that are a few years old but the catch is my LCD monitor is 1680x1050 so I want to play as close to native res. as possible. I was thinking about a 7600GT, 8600 GT, or GTS? I don't want to spend lots of money but I would like to get a nice picture with these games.