this might possibly work, although I don't know if you can project one comp to the other (really more "control the other comp from another comp").. .. another alternative is to use VNC (and connect with chicken of VNC), but this is pretty slow.
If you know how to hardware mod you might be able to open up the ipod and make hardware configurations, but I doubt it'l be easy =(
And... <drumroll> ... has been asked and answered here approximately 20 times. Although the Search feature does take some getting used to, it is well to try a Search before posting a new question, coz it might not be that fresh, after all...
Welcome to MR. We don't bite, really. Well not much. Except Mad Jew, he pinches.