I have:-
3400+ Althon
1024mb Ram
XFX 6600gt
and I was wondering can I turn on AA and is it worth putting it on?
Aa
Sluggs
Pharoke
You should be able to run 4x AA with no problem. Yes it is worth turning on, takes the jaggies out of angled lines.
AceSnyp3r
I have a 6600GT myself, I can run 2xAA well, occasionally dropping to ~30 frames in fights. At 4xAA my framerate gets a little low in areas like Ring of Fire, so I usually leave it at 2x.
Pharoke
I too have a 6600GT and I run 4xAA with no dips at all, although I am running AMD 64 3000+ and 2GB of Ram, but either 2x or 4x is good.