how can I best get my ipod\iphone to work with my H2

[Eatmygass]

I do not have the navigation in my 06 SUT if that matters. The only real dissapointment I have with my Hummer is that I cant easily connect my
Iphone\ipod to the stereo. All my fricken songs are on that thing. The 6 disk cd changer is nice, but soooo 1998. Ipods have been around forever, and even some of these little 14k dollar cars have it built right in! But NOT my H2?

Can anyone share their stories or setups. Is it true that no matter what I will lose control on the steering wheel settings if I change out the unit?

any help or ideas appreciated...