Well, I might end up going with this:
http://www.lbodnar.dsl.pipex.com/joystick/
Since it can support a lot of devices, and seems very straightforward as to how to hook things up. I just wish I could build something like it for $5-10 bucks instead of $45
BTW, what does the Ohm rating on a potentiometer mean?
Thanks,
Nathan