$600 Gaming Rig

I need to build a rig capable of playing games decently, such as Call of Duty, for under $600. I'm thinking along the lines of a Sempron, a GB of RAM, and a 9800 Pro? All suggestions welcome, I don't need links -- just names. Fire away!

What components do you need exactly? Monitors, keyboards, etc will drive the price up, but if you just need mobo, proc, vc, & ram you can build a good rig for that price.

I don't need a monitor, keyboard, or mouse. I do need the full tower including case though.

This would make a good gaming computer for cheap. All the parts from Newegg except the cpu which is cheaper at ewiz.

EPoX EP-9NPAJ Socket 939 NVIDIA nForce4 ATX AMD Motherboard - Retail $88

AMD Athlon 64 3000 939pin OEM $120
http://www.ewiz.com/detail.php?name=A64-3000BP

Western Digital Caviar SE WD800JD 80GB Serial ATA $56

CREATIVE Sound Blaster Audigy 2 Value $55

THERMALTAKE TR2 W0070 430W Power Supply - Retail $45

CHAINTECH SE6600G Geforce 6600GT 128MB 128-bit GDDR3 PCI Express x16 Video Card - Retail $166

CORSAIR ValueSelect 1GB 184-Pin DDR SDRAM System Memory - Retail $101

NEC Black 16X DVD Burner ND-3540A - OEM $46

Total: $557.26

About $40 left for the case and heatsink.

For $600, I would get two XBox360's.

1. To be modded, because you know thats too much for all the EE freaks to keep their paws off.

2. In case 1 fails.