Just to assure you, You can not just plug into the G-4 with your RC box, the program was delveloped to have to buy their software, and the control box they supply has the key to using it built into the box, you can plug in your box to the Sim box and it even comes with the cords to do it, But I'm sure that is their way of making sure the discs aren't copied and given to every friend of a flyer. Its expensive alright, but it is a great Simulator.