Ok, after reading all kinda of FAQs until my head began to hurt and visiting the sites of Keyclone, Autohotkey, and Hotkey.net I am confused on which would be the best for what I am trying to do.

I simply want to dual instance 2 Characters simultaneously to 60 on my single machine. I control a pally which I use to tank and a shammy which I use to heal.

I would like to control both characters from my Pallys screen. Really all I would like the shammy to do is heal me and be able to loot if possible for collection quests while following me around. (mouse over healing would be great since I use clique and grid with my healers)

If you have any reccomendations of what software would be the easiest to accomplish this it would be much appreciated.