Good processorShitty motherboard
Get a Seagate hard drive
Power supply looks decent
Memory looks fine (BTW, you don't NEED 800 MHz memory, although it's nice to have the extra headroom)
Graphics card is good
Now, one thing about the graphics card. While it is certainly fast, especially for the price, it does not support Shader Model 3.0, which means it does not support High-Dynamic Range rendering. While this isn't a huge issue at the moment (only a few games make use of it right now), many new games are being developed with HDR in mind.
Also, I'd rather have 1 GB of RAM and a better video card than 2 GB of RAM and a worse video card for gaming ... Just me ... I'd go 2 GB of RAM after getting a 7900GT //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif