Building my first PC any suggestions?

I'm sure you guys get asked this alot, but this is my first time trying to build a PC. It will be mostly for gaming only and will be hooked up to a 1080p dlp hdtv and also to a 7.1 surround system. The total cost is just under $1300 I wanted to stay around a $1000 but the couple hundred extra seemed like a good deal for the faster ram, good sound card (i hope), quad processor, and 4870 card. The main reason I am getting the case I am is because I save about $70 when doing a combo with the CPU. Anyone see anything wrong here or compatibility issues? Thanks.CORSAIR CMPSU-620HX 620W ATX12V v2.2 and EPS12V 2.91 SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC Power Supply - Retail ASUS P5K PRO LGA 775 Intel P35 ATX Intel Motherboard - RetailIntel Core 2 Quad Q6600 Kentsfield 2.4GHz LGA 775 Quad-Core Processor Model BX80562Q6600 - RetaiSAPPHIRE 100247L Radeon HD 4870 512MB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - RetailOCZ Platinum 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model OCZ2P10664GK - Retail ASUS Xonar D1 7.1 Channels PCI Interface Sound Card - Retail XCLIO WTBK ADVANCED Fully Black Finish Steel / Plastic ATX Full Tower Computer Case - Retail ASUS Black SATA DVD-ROM Drive Model DVD-E818A3T - Retail Western Digital Caviar SE16 WD6400AAKS 640GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM Microsoft Windows Vista Home Premium SP1 64-bit English for System Builders 1pk DSP OEI DVD - OEM Building my first PC any suggestions?
Decent Build. I would rather get a cheaper video card, and use that money to get a better processor, I tested a Q6600 on an Abit P35 motherboard and I didn't really like it, but it does have alot of room for overclocking. I would get a better motherboard too, ASUS P5Q is 25 dollars more, has P45 chipset, and good overclockin optionals.Building my first PC any suggestions?
[This message was deleted at the request of the original poster]
Solid build.