@Ro-Bot-X
One of the guys in the robotics club I belong to (The Silicon Valley HomeBrew Robotics Club) wrote an article on using the Chumby as a robot controller. You can find it on his web site: http://www.demandperipherals.com/docs.html#howto. He said you can contact him if you have any questions. I also have a fair bit experience using the Chumby as the brains of my robots. Feel free to PM me.
I don't want to hijack this thread with posts about the Chumby, so let's start a new topic or exchange PMs.
--Osman