Arduino Programming for Electric Buggy

I need some code written for Arduino. I am building a ride in VW Electric Buggy for my daughter. Its a mobility scooter converted. I am basically converting it from manual to digital control. I have installed an actuator with pot feedback for position and with an actuator controller. The speed controller just needs a 5k pot input (3x pin) for forward, neutral and reverse (2.5k neutral).
Anyway I have installed a dual 5k pot joystick (for steering and throttle). This connects into the arduino. Basically input from the joystick needs to be replicated from arduino as an output to the Digital pot (MCP42010-I/P). Then this digi pot would output into the speed controller and the actuator controller.
I am also looking to install Radio Controls (standard 3x channel RC car transmitter and receiver). This can be done later so not worried about this bit unless its easy to add the code. Anyway I know very little about arduino and need someone to bang this code together.