I would suggest getting the following:
AMD Phenom II X4 955 Black Edition $159.99
ASUS M4A79XTD EVO $118.99
GIGABYTE GV-N470D5-13I-B $349.99
G.SKILL F3-12800CL9D-2GBNQ $64.99
Western Digital WD5001AALS $69.99
CORSAIR CMPSU-750TX $109.99
LG Black GH24NS50 $19.99
NZXT M59 $59.99
total $953.92
It would be an excellent gaming rig.