First of all, if you are looking for a gaming PC, you should even out your CPU and video card.
Lower your CPU to about a 2.4 Ghz processor and change the VGA card to some 128 MB card (I'd recommend GeForce over Radeon because I hear it is better for gaming, but Radeon is better overall in graphics in other areas).
Also, I hink the price is pretty high, I'd jsut recommend going with custom built computers becauses companies like circuit city really rip the consumers off. I think I could all those parts for:
2.8 GHz: $240
512 MB DDR: $80
Radeon 9200 128 MB: $60
CD Rom 56x: $19
Total: $399 - so let's say $400
I just pulled these prices straight off my dad's website. And if you think I'm lying, just search online on various websites for those specific parts. I'm sure you could find them cheaper on other sites too.
My suggestion to you is get these parts seperate and go to a smaller company and get a custom built computer. As you can clearly see, the price is much lower.
Even if you add the extra peripherals, monitor, keyboard, mouse, speakers, hard drive (which you failed to mention, and it is a key part of the overall price), you will still be in way blow the cost of $1100.