400$ Gaming Computer

[Prototype]

Pentium Dual Core 2.2ghz - $80
Newegg.com - Intel Pentium E2200 Allendale 2.2GHz 1MB L2 Cache LGA 775 65W Dual-Core Processor - Processors

BioStar TForce P43 - $80 after MIR
Newegg.com - BIOSTAR TForce TP43D2A7 LGA 775 Intel P43 ATX Intel Motherboard - Intel Motherboards

ASUS 9600GSO 512mb - $99
Newegg.com - ASUS EN9600GSO MAGIC/HTDP/512M GeForce 9600 GSO 512MB 128-bit GDDR2 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Desktop Graphics / Video Cards

CORSAIR XMS2 2GB (2 x 1GB) - $38 after MIR
Newegg.com - CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Desktop Memory

SAMSUNG 250GB SATA 3.0Gb/s - $60
Newegg.com - SAMSUNG HD250HJ 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s Hard Drive - Internal Hard Drives

LITEON 20X DVD Burner - $20
Newegg.com - LITE-ON Black 20X DVD+R 8X DVD+RW 8X DVD+R DL 20X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache IDE 20X DVD±R DVD Burner - CD / DVD Burners

CoolerMaster Elite RC330 - $45
Newegg.com - COOLER MASTER Elite 330 RC-330-KKN1-GP Black SECC ATX Mid Tower Computer Case - Computer Cases

Thermaltake TR2 430W - $25 after MIR.
Newegg.com - Thermaltake TR2 W0070RUC 430W ATX Power Supply 115/ 230 V - Power Supplies

Total: $443.
Im on a roll today...

u can change the e2200 to e2180

and this faster hdd Newegg.com - Seagate Barracuda 7200.10 ST3250410AS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive - Internal Hard Drives