Sound blaster Audigy SE? Does that even work with Windows Vista/7 ?
Also, have you got a good power supply? I'd recommend at least a 550W PSU for that setup.
As for OS, I'm guessing you are going windows 7 or already own an OS. Make sure you use a 64bit version so you can use all 7GB of RAM.
All else looks good. i7 is a beast, a stock X4 955 may beat a stock i7 920. However - thats Phenom II 3.2Ghz vs i7 2.66Ghz. As that i7 bundle is set at 4.0Ghz there is not a phenom II which is able to beat it (Phenom II X4 955 seem to max out at 3.8Ghz).