Try this company:
http://www.alphamacsoftware.com/
They have an RC Heli simulator for Mac that should even work with a USB adapter for your transmitter, or even a Real-Flight transmitter.
I can sympathize with you, I started the other post about Plane simulators for OS X! I don't know about how well programs such as Virtual PC would work - someone posted in my thread about them being kind of slow. I don't have any other need than to use the sim for it, so I can't justify the expense...
By the way, congratulations on being a Mac user!