So I went ahead and ordered the parts. I made a few changes to your suggestions though.
Grabbed a Sapphire Radeon 5870 2GB @ $200 Shell Shocker deal and grabbed 8 GBs of the G.Skill Ripjaw ram for 70.
Came out to being around $504. Little bit more than what I was wanting to spend but...
1) What will you be doing with this PC? Gaming? Photoshop? Web browsing? etc
Gaming(BFBC2, TF2, LFD2 and MMORPGs), Website development, Web browsing, School (Office)
2) What's your budget? Are tax and shipping included?
~450 before shipping and handling
3) Where do you live?
Missouri
4)...