$800 Gaming Build

Why can't anyone provide a brief description of parts these days  

Yeah, don't make us click all those links.

Anyway: WD6400AAKS, Q6600 OEM, Vista Home Premium 64-bit, Tuniq Tower, Lite-On SATA burner, GA-EP45-DS3L, G.Skill DDR2-800 are good choices. You could get the Sunbeam Core Contact, aka Tuniq Tower v2. I found a reviewer who managed to fit the Core Contact in the NZXT Apollo, btw.

The 9600GSO is perfect if this computer is used for work, office, server stuff, Solitaire. It will stink in Crysis and similar. Tell us more about the
purpose of this PC.

NZXT Apollo - good value for $50. Only 2 fans, but the 9600GSO isn't that hot.

CoolerMaster 650W PSU - there are lots of better brands, and 650W is overkill here. This Earthwatts 500W is also $50 and powerful enough.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007

While some of the items you listed are better then what I’m suggesting, the point of the build is gaming right? So, I think the money is better spent on items that will enhance your gaming performance.

SAMSUNG Black 22X DVD $24.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Little cheaper than the one you listed, but Samsung is a good company.

Western Digital Caviar RE WD2500YD 250GB $44.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Smaller size but if it’s only a gaming rig, 250gb should be plenty of space

COOLER MASTER Elite 330 $34.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Cheap by some standards, but it does what a case is supposed to do. It’s harddrive cage is also half the width than normal, so you can install basically any graphics card into it, (just don’t have a HDD on the same level as the GPU) There is 12 inches between the back and the HDD cage. Far as I know the 4850x2 is the largest pcb design so far at 11.5inch.

ASUS P5Q Pro $114.99 ($99 after $15 Mail in rebate)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Has extensive Overclocking features. Can handle high fsb speeds. Conduct a search of p5q pro review and see for yourself.

Intel Core 2 Duo E8400 Wolfdale 3.0GHz $164.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Well it’s not a quad core, but it will pair nicely with the p5q pro. Quads don’t overclock as nice on the p5q pro. Most games will not utilize all four cores anyways and this should be plenty of power even at stock speeds. You should be able to oc this to 3.6ghz w/o any effort.

ARCTIC COOLING Freezer 7 Pro 92mm CPU Cooler $26.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

This was suggested to me by another person, plus it has like 3,000 reviews. It does have pushpin installation but it works well once its installed (according to the reviews)

Microsoft Windows Vista Home Premium SP1 64-bit English OEM $99.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Not much to say about this.

CORSAIR Dominator 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) $52.00 ($22 after 30$ mail in rebate)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

P5Q pro natively supports 1066, manuel says it can even support 1200. This ram is on the QVL list. Its cheap, looks cool, and is even cheaper if that rebate comes in. I believe 1066ram will allow you to overclock further then 800 (not sure on that, but I think generally its true)

SAPPHIRE 100245L Radeon HD 4850 512MB $154.99 ($134.99 after mail in rebate)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

This should be leaps and bounds better then that 9600 GSO you have listed. Since the title is “$800 gaming build” I’m going to assume it’s for games, so you should spend some more on the gpu.

COOLER MASTER Real Power Pro RS-650-ACAA-A1 650W $79.99 ($49.99 after mail in rebate) but you know that since you picked it out.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Not sure on this, above poster suggested one so maybe go with his.

Total is $824.29 (including $25.38 shipping) w/o any rebates

Total if all rebates work out $729.99

actually idk... my 9600GT plays crysis on all high (except for shader setting, i don't like how it looks on high setting) on my 19" widescreen 1440x900. very playable, wonderful graphics... im guessing the 9600GSO would easily be able to do medium settings, and if you're one of those people who game on a 17 or 19" 4:3 ration monitors, maybe even high!

4850 will certainly rape both of them though. i mean its meant to compete with the 9800GTX...

4830 might be a good choice though.

Ok so this is what i have so far
Q660 OEM
Open Box P5Q Pro
Case
MSI R4850-512M Radeon HD 4850
Antec earthwatts EA500 500W
G.SKILL PI Black 4GB (2 x 2GB)
Western Digital Caviar RE WD2500YD 250GB
Western Digital Caviar WD800BB 80GB
SAMSUNG 22X
Vista Home Premium SP1 64
Arctic Silver 5 Thermal Compound - OEM
ARCTIC COOLING Freezer 7 Pro

Total is $818.64
And i have $850 and i need a better Mobo that would go well with the Q6600 because i plan on Oc'ing it to 3.2 ghz
And also better ram  

This RAM is in a great sale now, 4GB for $30.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227267

Don't get an open box MB, it's very risky. Get a new P5Q Pro for $100 or a GA-EP45-UD3R for $105.

Dump those hard disks. They offer 330GB in total for $81 and they're slow. Get a $70 WD6400AAKS, it's twice as big and much faster and costs less. Just make an 80GB partition for Windows.

I'm installing Gentoo Linux on the 80 gig and i don't like partitioning in windows
Ok im not going with an Open box MB took your advice  

I wouldn't go open box. Everyone here says that the E8400 + Asus P5Q Pro COmbo, and its on sale together on New Egg: shopping cart

+1
Getting those two separate drives is crazy whether you "like partitioning in windows" or not. The new 640GB drives are much faster than those older drives. Just use your Gentoo disk to partition the drive. Whatever it takes to avoid those slow drives.