Heres what you need to buy:
GIGABYTE GA-965P-DS3 Socket T (LGA 775) Intel P965 Express ATX Intel Motherboard - Retail $141.13 shipped
Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775 Processor - Retail $317 shipped
CORSAIR ValueSelect 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 667 (PC2 5300) Desktop Memory - Retail $213 shipped
XFX PVT71PUDD3 GeForce 7900GS 256MB 256-bit GDDR3 PCI Express x16 Video Card - Retail $200 shipped $20 rebate
HIPER HPU-4K580-MS ATX12V v2.2 580W Power Supply 100 - 120V - Retail $101 shipped
COOLER MASTER Centurion 5 CAC-T05-WW Black/Silver Aluminum Bezel, SECC Chassis ATX Mid Tower Computer Case - Retail $66 shipped
Seagate Barracuda 7200.10 ST3320620AS (Perpendicular Recording Technology) 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive - OEM $95 shipped
LG Black 18X DVD+R 8X DVD+RW 8X DVD+R DL 18X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2M Cache IDE Super-Multi DVD Burner - OEM $36 shipped
All total, $1163 shipped to your door, courtesy of the eggheads at newegg
That good enough for ya? leaves you with 37 some odd dollars for lights fans and other such niceties