I'm rather disappointed.
The case is awful and I wouldn't trust the powersupply that comes with it to power my toaster, never mind an expensive computer. There are a wide range of great, high quality cases from manufacturers like Cooler Master and Antec. Many which are actually cheaper, yet better than the one you selected. The
CM Centurion is a case I have used before and is a good one to start with. The newer
CM HAF is OK too if you have the budget. The Antec
900/
1200 are quite popular as are the
range of high-end cases offered by Lian-Li. I'd recommend you buy a case without a powersupply and buy them separately.
Antec, Corsair, PC Power and Cooling, Silverstone, Cooler Master, XClio, and OCZ Tech are all decent brands to choose from for PSU's. I can't recommend a specific model or range to choose from without knowing what other components you were planning on using.
The motherboard you have chosen is from a manufacturer who is seldom trusted in the world of home-built computers.Also, you picked one that isn't compatible with the processor you chose.
Speaking of which, I'm unsure if going with the Core i7 platform is the right choice for you. No budget was mentioned, but I am guessing you must have a limit. I might recommend one of AMDs new Phenom 2 series of CPUs. They are quite powerful, more affordable, and can be used with a huge range of motherboards.
It is difficult to comment on your choice of GPU without any knowledge of a budget, but I'd say you should look at ATI's latest offerings (The HD 4000 series); they are well priced, and have a high degree of performance. If you have the budget (and the desire) you could go for one of the HD 5000 series cards. If you were to stick with the 9800GTX I would not go for the Core i7 platform as you would simply be throwing money away.
It takes time to put together a well balanced list of components for purchase, but the main thing to note is how much you are able and willing to spend.
