I have never been inside a helicopter, but I have played a lot of PC Flight Simulation games (Microsoft Flight Simulator 2000 and Combat Flight Simulator, WII Europe Series). It is really hard to get the plane on balance in the air. You basically have to be checking the compas, to be aligned, the plane to be in the correct position, the correct speed according to the wind, and a lot of things. Of course the older planes, were even more complex to manipulate, you had to control the mixture manually.
Well...anyways, I tried then playing Longbow from Janes and I couldnt maintain myself on the Air. It is far more complex to pilot a helicopter. There are two things to control, the upper wing and the rotors on the tail. Basically what the upper wing does is control height while the one in the tail, makes you move from right to left. THen you have to tilt a little bit the thing to make it actually go.
Of course there is little to know from pc games, but at least you ge the idea of how hard is to control a helicopter. I remember watching the Vietnam movies, and seeing two pilots controlling the helicopter.