I want to spend between $500-$800. This is what I have come up with so far. I'm definitely open to any suggestions to make it better. I plan on using my monitor, keyboard and speakers from my old computer. I also have an old 9600XT but I will upgrade that probably at Christmas.
Hard Drive - Western Digital Caviar Blue 320GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive
That RAM is severely overpriced. You can get nice CAS 7 DDR3 1333 RAM for the same price. You can also get a nice AM3 motherboard in a combo with your CPU to save you some money. These suggestions get you a better build for less money. You've got to love a "win-win" situation.