i5 2500k ~$230
ASRock Extreme 3 Gen 3 ~$130
get another stick of G.Skill or just buy a new kit since they are so cheap right now.
a good PSU (corsair, XFX, OCZ, Antec, seasonic) 750-850w ~130-150 incase you want another 460 for sli
A case of your liking, I suggest getting a 60-120GB SSD for a boot drive and a 1TB HDD if you have an extra otherwise that will cost you another 100-130.
This is below your budget, but if you want the best performance you could always go for a better GPU and just leave the 460 in your AMD build.
Thanks for the reply ... I took some of your advice and I think I found what I'm going to get ... although I still need some feedback on a video card ... Should I get another gtx 460 and go SLI or should I spend a little extra and go for a gtx 580?