I have a cheap DSL from AT&T/SBC for $20 a month. I was going to play new upcoming online PC games like "Age of Conan" and "Warhammer Online".

Do I need to upgrade my internet speed?
How fast do I need?

Anything info will be great!
Oh, my computer is brand new...
3.0 intel duo
4gb, 500gb hard drive, 8800 gts
thanks in advances