Hi,
I don't know where in Europe you are, but keep in mind that in some places (UK for example) the fm transmitters are currently illegal!
Sorry I don't know how to answer your question. I previously used an an iTrip with my old 3G iPod in europe and it worked fine.
Good Luck
Macbook 1.83GHz 1GB Mac OS X (10.4.6) iPod Nano, iPod 3G 20GB