Decided on these parts, need reassurance.

[pickelweasel]

SAMSUNG Black 22X DVD+R 8X DVD+RW 16X DVD+R DL 22X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 22X DVD Burner
http://www.newegg.com/Product/Product.aspx?Item=N82E16827151171

Western Digital Caviar SE16 WD6400AAKS 640GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136218

GIGABYTE GA-MA78GPM-DS2H AM2+/AM2 AMD 780G HDMI Micro ATX AMD Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128341

SAPPHIRE 100247L Radeon HD 4870 512MB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102769

Antec earthwatts EA500 500W ATX12V v2.0 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007

G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231122

Intel Core 2 Quad Q6600 Kentsfield 2.4GHz 2 x 4MB L2 Cache LGA 775 Quad-Core Processor
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115017

ARCTIC COOLING Freezer 7 Pro 92mm CPU Cooler
http://www.newegg.com/Product/Product.aspx?Item=N82E16835186134

Microsoft Windows Vista 64-Bit Home Basic for System Builders Single Pack DVD
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116200

Antec Nine Hundred Steel ATX Mid Tower Computer Case
http://www.buy.com/retail/product.asp?sku=202997579&loc=101


Anything I should change? Any criticism on it is greatly wanted.

 

[glenngjp]

Vista Home Premium 64bit is only $10 more, you should consider it.
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116488

 

[glenngjp]

Oh, and that mobo is for AMD CPU's, your q6600 wont fit in it.
I hear http://www.newegg.com/Product/Product.aspx?Item=N82E16813131329 or http://www.newegg.com/Product/Product.aspx?Item=N82E16813131333 are good choices for about the same price.

 

[WR2]

CPU-Motherboard mismatch........
You're looking to build a gaming rig?

 

[pickelweasel]

Yeah going for a gaming pc that wont destroy my pocket.

Following the posters above and getting the home premium, and choosing http://www.newegg.com/Product/Product.aspx?Item=N82E16813131333

Really glad I posted lol

 

[WR2]

Yes - that Q6600 will be much happier in that ASUS P5Q SE P45 motherboard.
Im a little concerned that the Q6600 OC'd and the 4870 OC'd will push the Antec EA500 a little too hard. The Q6600 can suck a lot of power when OC'ing.
How about the OCZ GameXStream 600W? It's only $10 more but has free shipping so the amount charged on your credit card should be about the same. And it does have a $30 rebate.
The NewEgg site says it has 2 6pin PCI-e connector but the OCZ website says it has 1 6pin and 1 6+2pin (8pin) connectors.

The rest looks good.

 

[dirtmountain]

^ agree with WR2 about the OCZ Steathstream. Good changes. Never hurts to doublecheck a build.