Not enough info

The flight simulator seems to have the potential to be fantastic. What is missing is the proper information on how to connect the computer to teh controller.
I have a brand new 27” iMac and spectrum DX6i and a DX8, and I cant seem to make either one of them work to controll teh program. Whats more frusterating is the ikarus website is also very unclear.
More information on how to make these things work would be VERY helpful

JDBuckSavage724 about aerofly RC 7 - R/C Simulator, v7.0.7