My AMD X2 4000 with 2 GB ram and running a 7900 vid can run 4 instances of wow no problem. I do have a 20' wide monitor for it.

I still have a P4 around, so I can probably test how many wow I can run in there.

If you're thinking 5 wow accounts, you're looking atleast $75 / month subscription. If that can fly with your parents, then $2500 for computer should be no problem.

Try 2 account and see how your parents feel about $30/month.

At 15, I'd be asking for that money towards my car.