New I7 Build

CPU Cooler: Switch that for the Coolermaster Hyper 212. It's $15 cheaper, and it's one of the best HSF out there.

PSU: Rosewill isn't known for quality. Switch for a Corsair, Antec Earthwatts, Seasonic, OCZ or PC Power & Cooling. My personal favorite recommendation right now is the OCZ StealthXStream 700W for $55 after rebate.

GPU/OS: I think there's a combo with Windows 7 and the XFX 5850. That'll save you some money and get you a great warranty on the card.

Other than that, a good build.

Besides a small screw driver, everything should come with the various parts. Read the "Step-by-Step Guide for Building a PC" sticky to get a great idea of what to expect.

I'm not really a monitor person, so I don't have a recommendation. Or at least one that's not based solely on price.

CoolerMaster are also great PSUs... i would also consider Corsair but i belive the other members know more than me about those...
Monitors?? Why not purchase a plasma HDTV and plug it to your computer?? I do it myself and it's a good idea... specially GREAT for games you'll see

@grossemesser, a HDTV is normally much more expensive than a monitor, and you get lower refresh rate, lower response time, worse contrast ratio, and most of the time a crappy resolution.

getting a HDTV with the same specs as a monitor costs an arm and a lag, so i'd advise against it.

i have benq e2200HD monitor. id recomend it a hundred times over. its cheap, 21.5inch with 1080p resolution. 2ms response time and 10,000:1 dynamic contrast. looks excellent, and very well priced. LGs own 21.5inch is also a very good choice.

And don't get hung up on a modular because most of the good cases have a bottom mounted PSU, so all benefits of the modular unit are eliminated by the cords being at the bottom and out of the way already.

if you want big, theres always ATI eyefinity. looking into it myself. 3 monitors for ultra widescreen. looks mental