A copule of remarks:

1) FMS is not the best sim to learn helies. Even FMS designers admitted that helie flight model is rather primitive in FMS.

2) Even if your TX doesn't have a trainer port, you still can find a PPM signal wire and use it, together with the TX ground, to hook up a TX-to-PC interface. There quite a few places on the Net with the description of such a mod.

3) You can buy a Logitech RumblePad, which has two analog joysticks on it. I've got a refurbished one on eBay for $10 and it works with any sim, including RealFlight anf FMS.

Have fun,
Boris