Thanks for the explanation, cassidy. I tried it out and I didn't seem to accumulate any page-outs after playing the game for 5-10 minutes. I did get a ton of page-in's, however. Does that mean anything? My frame rates are still hovering in the 20's =/ I don't mind coughing up some money for extra ram (patriot ddr2 667 1gb sticks are only $44~ on newegg after rebate now), although I'm wondering if that would actually help.
If you're not getting pageouts, I wouldn't think more RAM would help. Since our machines are the same except for RAM, I can't really explain the performance you're seeing. As I said, I have the settings maxed and still get better fps than you do, which doesn't make sense.
(only WoW now and still awaiting SC3)
SC3?? Wow, you're gonna be waiting a long time! The rest of us would be happy with SC2!