After this initial screen:
I was given two choices as follows (the first saying it was free the 2nd being Orange Maps professional which is £2.50 a month for me.
If you are worried about being charged I agree with G8D and Brad and not accept the terms.
I'd go through the setup again but it would mean that I had to restore my Hero (and I dont really want to do that!).
I've tried uninstalling and reinstalling and it didn't go through the whole setup process sadly!
If in doubt, give it a miss (
or call Orange to see what you're entitled to).