Hi Tom,
Okay, I think I got the wrong ideas. I thought of replacing the cassette with the business CD and then just get the Ipod your BMW cable linking it to the business CD unit as AUX. Mainly becos I was thinking about the DICE unit but I have no one here in Singapore that will attempt to install it.
Looks like I need to go down another road to link my ipod.
Thanks,
Kelvin