If you want an awesome Heli sim (it has airplanes too), definitely look at Phoenix RC...it is second to none... http://www.phoenix-sim.com/welcome.htm

I've been using it for 6+ months and it really helps build confidence and orientation skills without the worry of crashing. Phoenix was originally designed for heli physics (later adapted to planes), unlike most other sim's. It also has utilities to modify the heli canopy and create your own sceneries. Their tech support is also incredible, no matter what the question or issue, they always get back to you fast.