Jetway isn't a good mobo choice. It's just not high quality. Stick to Asus, Gigabyte, and maybe MSI at a distant third.
I'm with srbarry though. You'd be much better off for gaming by getting the i5-750 and a massive GPU. And while I'm talking about the GPU, nVidia is a horrible choice right now.
You might want to come back in the 4 months to actually get a build, as tech is going to change in that timeframe, especially with Intel's new CPUs and Fermi supposedly due out in a couple of months. In the mean time, save up some more cash and you could have a killer gaming machine
Me again, per the Fermi stuff, this is why I was planning on using my old 4670 for now in my new build, get the i5 cpu/MOBO/case/PSU now and then add the GPU later. From your comment above I assume this is reasonable.
But what do you mean about the new intel CPUs? Is there anything coming that might make me want to wait and not get the i5 now?
No, the i5 is a great CPU. Intel just released some new dual cores on the LGA1156 socket, and the i9 is supposed to be coming along sometime, but I wouldn't expect it anytime soon. It's more of a general statement, as a lot of changes just happened or are coming in the next year or so. Thus, prices aren't exactly what one would call stable right now.
Regardless, I would wait as long as possible before buying anything, as the prices will fall over time. If you find some really good deals on the longer lasting parts (PSU, case, optical drive, etc.), go ahead and get it.