What kind of robotics, there's the type that you would control with a radio control, which would just drive servos and things with pre-built boards and circuitry. (Much like radio control mini airplanes)
Or there is the type that you would build from scratch and program from scratch, which would be able to perform certain tasks after being given commands.
Being that you are on an electronics forum I would assume the latter, but this is of course the much more difficult of the two.
Also what background are you coming from in the way of programming and electronics?