I like the i5 760, WD Caviar Black 1TB & HAF 932. Here are my suggestions for the other components...
PSU: Corsair HX650W/750 depending of you just stay with one card or plan on doing SLI, easier cable management due to been modular.
GPU: GTX460 1GB, worth the wait, definitely kicks the 5830 to the curb, competitive to the 5850 and cheaper than it too! EVGA gives a lifetime warranty with there AR models.
RAM: G Skill or Mushkin DDR3-1600 4GB 2x2GB sets will give u both speed and decent capacity @ a decent price too!
MOBO: Asus P7P55D-E Pro for SATA3 USB3 & 1 @x16 or 2 @x8 for SLI
MON: Samsung BX2440X 24inch 1920x1080 5ms DVI VGA LED LCD
Good luck with your build