Let me try this again:
$174 - Athlon X2 7850 + Vista x64 + Win7 upgrade
$144 - Sapphire HD4830 + Biostar TA780G AM2+ Motheboard
$130 - Antec Three Hundred + Basiq 430W PSU + 4 GB Corsair DDR2-800 RAM
$60 - Western Digital 640GB WD6400AAKS
$27 - Samsung SATA DVD Burner
Subtotal $551.
I splurged a bit on the hard drive as for $11 more I was able to get a 640GB instead of a 320GB, but after a certain point it's a drag because there's a minimum cost to so many of these parts.