Any ideas on gaming PC build?

[BlueAcolyte]

Dad finally got tired of me using his computer, so I want to build one for gaming.
I think this is a powerful, expandable layout, so I can upgrade to Penryns, crossfire, or more RAM when I have the money. I am in fact OC'ing.

This is a 100% new build.

CPU: Intel C2D 4500 2.2GHz to 2.93GHz running @ 2:3 w/ RAM
http://www.newegg.com/Product/...x?Item=N82E16819115031

MoBo:Gigabyte GA-P35-DS3L LGA 775
http://www.newegg.com/Product/...x?Item=N82E16813128059

RAM:GSkill DDR2 PC6400 2X 1GB 4-4-4-12
http://www.newegg.com/Product/...x?Item=N82E16820231087

other ideas:
Geil 2x1GB PC6400 4-4-4-12
http://www.newegg.com/Product/...x?Item=N82E16820144062

A-Data extreme 2x1GB PC6400 4-4-4-12
http://www.newegg.com/Product/...x?Item=N82E16820211174

Case: Cooler Master RC-690 3x120mm fans + apevia 120mm LED fan
http://www.newegg.com/Product/...x?Item=N82E16811119137

GPU: PowerColor AX3870 512MB GDDR4
http://www.newegg.com/Product/...x?Item=N82E16814131072

PSU:Xclio Goodpower 500W
http://www.newegg.com/Product/...x?Item=N82E16817189005

HDD:Western Digital 320GB SATA 3.0GB/s
http://www.newegg.com/Product/...x?Item=N82E16822136074

DVD drive:ASUS 16X 48X combo drive SATA
http://www.newegg.com/Product/...x?Item=N82E16827135151

CPU cooler: Cooler master hyper tx 2
http://www.newegg.com/Product/...x?Item=N82E16835103031

Masscool TIM Shin-Etsu x23 + belkin anti-static wristband
http://www.crazypc.com/products/50118.html
http://www.newegg.com/Product/...x?Item=N82E16899888207

Current cost: ~$730

 

[Agentbolt]

I'd wait till prices settle for the new GPUs. The 8800GT is still supposed to be hitting the ~180 dollar mark someday soon.