DirectInput multiple mice...

I''m not a big expert on DirectInput, so pardon me if this is a dumb question... Is it possible to allow the player to utilize TWO mice to perform 2 different actions? Example: A helicopter sim... left mouse movement controls rpm of main roter (up/down) and tail rotor (left/right rotation), while the right mouse controls the pitch/roll of the aircraft? I think there are a lot of cool possibilities, but I''ve never seen it done.