PC build, what do you think about these parts?

I would recommend you to get a better processor, AMD Phenom II X4 or i3 (or better if you can) will be good enough. Also if you planing play games like Crysis 2, witcher 2, dirt 2 or 3, or anything like that you will need a better graphic card. at least gtx 450 or radeon 6570. everything looks good.