Hi guys-- My car comes with a hidden iPod dock in the glovebox, which allows the car to play off the docked iPod controlled through the stereo.As it has some limitations as to the number of playlists it can play, my 160gb ipod is a bit clumbersome to use with it. So I'm considering an iPod touch, jailbroken, with wifi sync to allow me to manage it's playlists remotely when the car is within range of the wireless network. As it will never be used as a conventional iPod and any admin will be done through iTunes, I was looking at getting one with a non functional screen off e-bay to save cash. My question is, does anyone know if jailbreaking requires a working screen or is it all done through the machine it's plugged into? Also, does anyone know when the iPod touches changed charging voltage (my car will charge my iPod classic but not my iPhone). Not a deal breaker but if I knew a specific generation would also charge then more the better! TIA, Dan.