Just wondering, if I can use my Nvidia Geforce 7900 from my old tower in this build you gave me. Yes you can. Also, is possible to do SLI using the GTX 460 and the 7900? No. SLI requires that the graphics cards have the same GPU on all of the cards. So this means you would have to get another GeForce 7900 or two GeForce GTX 460s.
Thanks again for all the help,