As others have said, Y harness for dual aileron to one channel setup, and the rudder is tied to the nose-wheel for steering on the ground and rudder control in the air.

I can give you some information on a third radio, the Airtronics. They make an 'entry level' radio that is not computer controlled, and then you can move up to their RD6000 six channel 5 model memory computer radio. Prices are reasonable at Tower Hobbies. Your choice. Ask around. All of the radio's of the 'big three.. Airtronics, Futaba, and JR (alpabetically listed not in order of preference) are all good. Higher end radio's are available, like the new Spektrum DX7, and lower end (price wise) like Hitec or even Tower, but I don't know if the Tower is computer controlled or not. Hitec makes some fine products too, on the lower end price wise, but the big three are considered just that, the ones most flyers are using. That could all change if the DX7 takes off like Horizon would like it to. I have one and like it so far.

There is another option, too, the Polk synthesized radios. I have one of those too, but don't use it as frequently as my Airtronics RD6000 and RD8000. But, this new DX7 has my attention for now.. and maybe for the future. Nice radio, but not cheap.

DS.