Considering that those four components together leave you with only $247 to play with for the CPU and memory, I'd avise against going for that 1950XTX as it is too expensive for your budget unless you don't mind a single core A64 and 1GB of RAM (or worst, the lowest end Sempr0n if you really really want 2GB of the cheapest DDR2 available)...
Oops, my bad, I linked the wrong video card. Its is corrected now.
The 4 parts equal $469 leaving $531
I was just saying skt939 is what I'd wanted last year. I don't have to have that board or psu. I didn't know if 939 or AM2 or E6600 ..etc, would be better now.
I guess to keep me from confusing you further just suggest a whole system for less than $1000. Not planning on over-clocking and upgradability isn't the most important.