New Gaming PC

case: http://www.newegg.com/Product/Prod [...] 6811129033 or
http://www.newegg.com/Product/Prod [...] 6811129032

motherboard: http://www.newegg.com/Product/Prod [...] 6813127031
cpu: http://www.newegg.com/Product/Prod [...] 6819116036
memory: http://www.newegg.com/Product/Prod [...] 6820134487
graphics card: http://www.newegg.com/Product/Prod [...] 6814125062

I'm building a system to play games on. I currently play Counter-Strike 1.6 a game thats been out for a while. I currently have a Dell, 1.8ghz p4, 512mb rambus, 9600. I get fps drops, lags, and things aren't as clear as they should be. With this new build I'd like to run 1.6 at 100fps in high settings w/ 1 or 2 smokes. Currently if I look at a smoke my fps will drop from 100 to 15. I may play some newer games in the future, but I don't need the highest settings on those. Really all I need atm is just a good computer to play 1.6 on. I have a few questions about the build.

1. Which case would be better? I believe antec has somewhat decent power supplies in their cases. The first one is 380watts while the second one is 480 I believe. Which would be best so if in the future I upgrade my CPU or graphics card I wont need to worry about my PSU?

2. I read the article here about the e2160 having the ability to be overclocked to 3.0ghz with stock cooler. What series of the core2duo would that overclock compare to? I was going for a cheap, but good build and I heard this processor can do the job. If it were overclocked to 3.0ghz does that mean each core is 3.0ghz or all together they are 3.0ghz? I don't know too much about all the new technology.

3. I have also read about bottlenecking performance. I was thinking with the overclocking of my CPU that the 8500 would be a good fit. Do you think this would last me a good while without upgrading?

I think the only upgrade I'd do on that computer in the next year or so would be a quad-core processor. Thanks in advance guys.

Thanks for your help. Wow, had no idea the 2600 had that much of a difference on the 8500gt. Also, would 380watts be enough for the 2600?

I remember reading that some type of cable included w/ stock PSU's in cases dont have some type of rail needed for a PCI-e card. Anyone know if that case has the proper stuff?

It has the 6 pin connector labeled PCIe.