Go to controls and select keyboard. The interface is a trainer-serial link.
http://www.tmac.asn.au/fms_free_flight_simulator.htm
to make your own. On E-bay
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=1759004033
Or other sources. I fly Futaba so I don't know where exactly to get an FMS cord for JR.
Good luck and practice hard!