For $1500 you can get a really nice system. Definantly go intel on the CPU. And since you want to play newer games it seems (although not a whole lot), 8800's aren't that expensive depending on the model you get. If you budget is that big, I'd stick money into something like a 8800GT and that way you're not getting an old card that may run AH, but shows its age in new games.
RAM is cheap, a good $50 for 2gb. 22" LCD's are relatively cheap running about $220-350 depending on brand and how nice they are. $60-70 gets you a good 250gb hard drive as well.
Make sure you stick about $100 or more in a quality PSU. Don't skimp on this often overlooked part. A PSU is supplying power to every component in your computer. Don't have a cheap $30 power supply wreck $1000 worth of equipment.
Brands I recommend: Intel for CPU, BFG of EVGA for video cards (because they often lifetime warranties, there may be other companies that do this as well), Asus for motherboards, Seagate for hard drives. For RAM, as long as you're not overclocking, any brand will do (as long as they have a lifetime warranty, as most do). LCD's, you can't go wrong with ViewSonic or Samsung for so good quality screens.