Multiple PC's / Mouse

I currently only have one PC but I plan on building a second to support my addiction....Ahem.... I mean "Past Time" :thumbsup: Anyway, Is it possible to mimic mouse movements across multiple computers? If so, does this only work PER PC, PER WoW, or can it be multiple WoWs on only one PC?

Edit: After thinking about it more, I'm going to rephrase what I was asking. Basically I was wondering if I need MORE than two PCs for my FOUR accounts to be able to click the same thing on each screen, (Mimic mouse movements)