Well I'm not utilizing it all of course... It's installed 3X2gig memory sticks and says it's installed and that I have 6 gigs of memory accessable- I know it isn't physically possible to utilize it though.

But I'm not saying go get more memory - if I implied that I am sorry. My main point was to check out your cache settings and I am able to run 5 instances of WOW without the major lag you're describing. It's a free option and if it doesn't work out for you then the only choice is 64 bit.