New gaming build check these parts please, any suggestions? thanks!

I'm thinking about building a new comp, been looking at parts, I'm not sure what motherboard to go with should I go with 680i?, any suggestions on anything below. I also want to overclock this better ram for this?, thanks.

Qty. Product Description Unit Price Savings Total Price

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COOLER MASTER Stacker RC-832-KKN1-GP Black Aluminum ATX Full Tower Computer Case - Retail
Model #: RC-832-KKN1-GP
Item #: N82E16811119121

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ABIT IP35 Pro LGA 775 Intel P35 ATX Intel Motherboard - Retail
Model #: IP35 Pro
Item #: N82E16813127030

EVGA 768-P2-N831-AR GeForce 8800GTX 768MB 384-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported Video Card - Retail

Corsair 520W power supply

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Intel Core 2 Quad Q6600 Kentsfield 2.4GHz LGA 775 Processor Model BX80562Q6600 - Retail
Model #: BX80562Q6600
Item #: N82E16819115017

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G.SKILL 4GB(2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-4GBPQ - Retail

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Western Digital Caviar SE16 WD7500AAKS 750GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM
Model #: WD7500AAKS
Item #: N82E16822136131

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Arctic Silver 5 Thermal Compound - OEM

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Tuniq Tower 120 P4 & K8 CPU Cooler - Retail
Model #: Tower 120
Item #: N82E16835154001

Yup, that'll work

Don't waste your money on DDR3.

yet

That motherboard is a great choice.
Your RAM is good for overclocking the CPU but less effective for OC'ing the RAM if you plan to do that.
Most of the time you'll get better RAM OC'ing with 4x1GB CL4 (4-4-4-12) RAM. But you dont need to OC RAM to overclock your CPU.
An agressive OC for the Q6600 2.4Ghz (9 multi x 266Mhz FSB = 2.4Ghz) would be in the area of 3.2~3.4Ghz. That would have the FSB at ~355Mhz - ~377Mhz. Since the DDR2 800 RAM runs at 400Mhz (400Mhz x 2 = 800) you'll be able to push the FSB to 400Mhz (3.6Ghz for the Q6600) before you'll even need to think about overclocking the RAM.