two account simple sollution

Hi

I have two accounts, I want to level two Hunters at the same time. Basically using one window, and have the other alt tabbed.

Is there any addon / anything at all. that is just a simple hotkey kind of thing, like i press arcane shot on one toon and the other toon presses it too? does that exist and is it free?

Thank you very much

Some people like Hotkeynet or similar key repeaters, but there is also Levelbuddy which seems to be specific for WoW.