This is my first time to try multiboxing and it isn't looking good.

I can open up two versions of WoW and log in on both with different accounts but after a while one always disconnects, why is this?

Computer spec: 2.06GHz, 2.00GB of RAM

*edit*
I can log onto a toon on one account but when i try to log on to a toon on the other account it disconnects. Basically i can access the toon selection page on both WoW but only one is able to play.