The flight controls can be made to operate by editing the fs9 cfg. file.

Access the FS9 cfg. file :
    
       C:\Documents and settings/Username/
            Application Data/Microsoft/FS9

Open the FS9 cfg.

Scroll down all the way until :
                      [FrameCallNoWarn]

If you have the Carenado Tomahak (for example) installed, it should show up underneath:
                       [FrameCallNoWarn]
                       Piper Tomahawk=0

Edit the 0 to a 1.   Piper Tomahawk=1   The flight controls will operate. There will still be no prop. I can live with that!