Hello Im looking to put together a fairly decent gaming machine. so far i have a core 2 duo E6400 and i am looking to put in the 7900GT mainly im looking for a mobo that is between 100$ - 200$. ive searched around newegg and tigerdirect but i cant settle on one. any help would be appreciated. Thanks oh btw will a 500w power supply be enough for this type of machine?