Quote Originally Posted by JohnGabriel View Post
You can test it.

Open 5 WoW windows at once, log into one of them while the other 4 just sit there. If you're able to play without lag you can test further by signing up for 4 WoW trial accounts and try playing 5.

I doubt you can play more than 1. Your RAM is just really really low.
i just played 5 instances at a time... it does run slow doing around 20-24 fps but it does work ... think getting more ram memory will do just fine 5 boxing on my sytem