Help Building an $800 Gaming Rig

I need help building a new PC mainly to be used for gaming, so I need some critique on my system before purchase:

GIGABYTE GA-P35-DS3L All Solid Capacitor Motherboard - $90
http://www.newegg.com/Product/Prod [...] 6813128059

Intel Core 2 Duo Wolfdale (E8400) - $210
http://www.newegg.com/Product/Prod [...] 6819115037

Kingston HyperX 4GB (4 x 1GB) 240-Pin DDR2 SDRAM DDR2 1066 - $120
http://www.newegg.com/Product/Prod [...] 6820134596

OCZ StealthXStream ATX12V 600watt PSU - $85
http://www.newegg.com/Product/Prod [...] 6817341010

SeaGate Barracuda 250GB Sata/3gbs HDD (16mb Cache, 7200rpm) - $65
http://www.newegg.com/Product/Prod [...] 6822148141

Philips DVD+\-RW DVD Burner Drive - $25
http://www.newegg.com/Product/Prod [...] 6827248013

PCI-E 2.0 EVGA GeForce 8800GT 512mb - $180 after a MIR
http://www.newegg.com/Product/Prod [...] 6814130319


Total Cost: $775 or up, considering that the Wolfdale's CPU price fluctuates and this excludes shipping ($20-$40)

I already own a nice case, so buying another one would just be redundant considering how many extra I have, and I know that the Wolfdale is very overclockable, even on stock cooling. I have a copy of Windows Vista 64-bit, Windows XP Professional 64-bit, and Windows XP Home 32-bit laying around. I have a 24-inch flat screen monitor I got for free (lucked out on that one) too.

My maximum cost is $800 so I have a fairly decent budget yet it is still limited.

I intend to use it for gaming. Since my PC downstairs has wireless, I can just hook it up for and extra 1-2 TeraBytes of file space for non-application data. I originally was trying to get a PC that would run crysis, but I'm not sure as to what this machine would do with it. I expected medium settings maybe high settings. Otherwise I have COD4 and Oblivion, but my PC now can't run them. (Yeah, a P4 with intel integrated graphics and 2gb of DDR 133 RAM. Slow as hell FTW! lol)

Other than gaming, I figured the above-average quality of the CPU and RAM would make it faster in regular apps.

EDIT: Okay, above average for my standards, lol