controlling a servo or stepper by Remote Contorl?

Hi all,

This may not be the place to ask this question. I have searched for
other groups but they are so small in group size and talent compaired
to this one.

My friend and I are interested in building a battle bot. Since I am
also building a servo controlled CNC I thought that maybe servos or
steppers are used to power the bots. Does anyone here know how the
battle bots are powered? How do you convert a model RC radio to be
used for this large scale bot? can Gecko G320/G340 be used to power
a servo motor for a battle bot?

I guess I just need some way to deliver steps and direction signals
from a radio control unit to the Gecko's to power a servo or stepper
for forward and reverse movement.

Any help would be great!!

Thanks

CADMAN