Thanks for your replies guys, and Maziar, I am not planning to overclock right away, right now im just focusing on getting this build running as well as posible. I might be overcloking a few weeks after it is built. I was wondering if i need to add more fans to the case before i overclock? Also, people tell me that the Radeon 4870 is an awesome card for my budget, but i was wondering if the 512mb will still be able to run these games on high. My monitor isn't that big or fancy.
Also do you the power supply is good enough for these components? I'm also not sure if it will fit in the antec 200 .
The PSU looks to be good.
I would like to know if i can run the games mentioned above at medium to high settings on an average 19 inch monitor
You would not find another card in that price range that would run those games better. So the answer is yes.