Processor - $222 - Intel Core 2 Duo E6400
RAM - $100.99 - G.SKILL 1GB (2 x 512MB) 240-Pin DDR SDRAM
CD/DVD Drive - $29.99 - LG Black DVD/CD burner
Case - $39.99 - XION Solaris Black ATX Mid Tower
PSU - $57.99 - Rosewill ATX v2.2 500W
Motherboard - $126.99 - ASUS ATX Intel motherboard
Hard Drive - $74.99 - Seagate Barracuda 250GB
Graphics Card - $219.99 - Sapphire Radeon X1900XT 256MB
Total - $872.93
I may be able to spend a little more than that, nothing over $1,000 though.