Not sure what you are looking for here...did you already buy and build this PC? Do you just want an opinion of what we think of it? I am going to assume this is the case and give you my honest opinion:
My opinion is that you should have gotten the UD4P or P6T mobo instead because that one is short several features that I would want. You also should have gotten more ram since you got a 64bit OS, and you will have to toss that kit of ram when you upgrade because you don't have enough slots to add another 3gb kit, so you kinda wasted your money there. The HDD you chose is slower than ones I would have bought for cheaper, namely the WD6401AALS. Also I would have gotten a better PSU, that one is mediocre quality and you could have gotten higher quality for the price. If you wanted a gaming rig, then you should have spent your money on a Core 2 Quad or PII 940 system instead and put more money into the GPU, the only reason to go for an i7 is if you either have tons of money to spend (and you obviously didn't) or you need it for Video rendering/editing or CAD or Photoshop. If that is the case then you should have gotten the GTX 260 which is better for those apps than the 4870, as well as more ram 3gb won't be enough. You also should have invested in a CPU cooler so you could overclock that CPU to get more performance out of it, which would help justify the amount of money you spent on it; Without a cooler you can't overclock which is a complete waste on the i7.