[b1gapl]

I will suggest this list:
Newegg.com - COOLER MASTER Centurion 5 CAC-T05-UW Black Aluminum Bezel, SECC ATX Mid Tower Computer Case - Retail
Newegg.com - MSI P6N SLI-FI LGA 775 NVIDIA nForce 650i SLI ATX Intel Motherboard - Retail
Newegg.com - Intel Core 2 Duo E4300 Allendale 1.8GHz 2M shared L2 Cache LGA 775 Processor - Retail
Newegg.com - G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail
Newegg.com - FSP Group (Fortron Source) AX400-PN, RoHS, 12cm FAN, version 2.2, 2 SATA, 20+ 4 pin, PCI Express, 400W Power Supply - Retail
Newegg.com - EVGA 256-P2-N615-TX GeForce 7600GT 256MB 128-bit GDDR3 PCI Express x16 Video Card - Retail
Newegg.com - Pioneer Black 18X DVD+R 8X DVD+RW 10X DVD+R DL 18X DVD-R 6X DVD-RW 16X DVD-ROM 40X CD-R 32X CD-RW 40X CD-ROM 2MB Cache E-IDE/ ATAPI DVD Burner - OEM
Newegg.com - Seagate Barracuda 7200.10 (Perpendicular Recording) ST3250820AS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s Hard Drive - OEM

Comes to $634.43....I realize this is a little out of your price range, so I made another system, based around AM2:
https://secure.newegg.com/NewVersion...tle=Budget+AM2
This one comes to a total of $560.93