Thanks for the input, I now realize I'm going to have to purchase a different receiver. On the gimbal I'll have a gyro and a gps receiver that will give me the orientation of the gimbal so that I can send commands from a ground station(PC). I can pre-program a motion for the gimbal or tell it to stop and focus on an object for aerial photography. Below is a link to the solution that I am pursuing to achieve this. Once I get a PPM receiver, I should be ready to go.

http://www.welwyn.demon.co.uk/PC_RC/PC_to_RC.htm