Multibox with laptop and computer

Hi, I used to multibox 3 shamans on my laptop but got bored as once I hit northrend I got a huge drop in fps as my laptop is terrible and then I got hacked and only just recovered account.

So my question is, is it possible to multibox with my main char on laptop and the 2 "clones" on another computer? Would keyclone or ISBoxer be better for this?

Can anyone link a computer (within £600) that would be able to handle 2 WoWs on high settings?

I'm not a very good computer person so how important is the processor? What is it's job with WoW and what does it affect?

Yes, you can have your main on your laptop and two clones on another computer.

ISBoxer is better for pretty much everything.

Why do you need the WoWs on high settings?

Just for pleasure, like if leader dies :P I don't play a FTL setup