New iPhone4, need help with phonebook

atropine

I have a 2009 with Nav, just picked up an iPhone4 today. Trying to figure out how get my phonebook (contacts) downloaded into the Nav system. From what I am gathering on the forum, I may be SOL. True? Also, I haven't tried plugging in the center console harness to listen to music off the iPhone yet (haven't loaded my iTunes library onto it yet). I think I remember hearing somewhere that the power requirements for the iPhone4 and the iPod Classic (which I currently own) are different, and I am worried that I may damage the iPhone4 by plugging it into this harness. Any thoughts?