If you get a new alpine head unit you can hook it up to your iPod
http://www.alpine-usa.com/products/leading...ch_kca-420i.htm
Or you can get an adaptor from these guys:
http://www.pac-audio.com/
I dont know exactly how the adaptor works but it will be cool when alpine coems out with their iPod interface. Basically both claim that you will be able to control the iPod from the head unit. The Alpine version you can even browse songs and see their names.