Performance on a laptop?

I currently have a Dell Inspiron 1564. I play MMOs such as World of Warcraft and Lord of the Rings Online. For some odd reason, I am having poor performance in these games. I’m sure it’s just my POS computer, but I’ve seen computers with less ram and fewer graphics memory run it more smoothly. I guess my question is, is there something I can do to improve my performance? I am buying a new computer in a few months, and I have already lowered graphics settings in-game.