Hi. A few of us now have the same problem.
Did you ever get this to work?
There is a thread at which is also tracking this problem AND the latest addition has been by the guy resposnible for the Parallel Port joystick driver (
www.angelfire.com/retro/deonvdw/PPJoy.htm) who is offering to provide a driver if we can confirm the reverse engineering you performed is still valid.
I'll see what I can do with my Zhen Hua over the next few days but any additions you can make might save some time (i.e. you gave up, found another SIM etc. etc.)
Many thanks for the initial reverse engineering. It give a great starting point in order to try to get this TX working with FMS.
Cheers, Dave