Ah, Ive just looked and found the Content folder in the MobileNavigator folder! I thought everything went in the root directory, oops. There was a map folder in there, with just a base map file in it.
So are only the shell.ini, MobileNavigator and created device.nng in the root directory, and everything else goes in the Content folder?
I've copied the Building, POI and Phoneme folders into the Content folder, and unsurprisingly, the map now shows up
On a separate note, if I only want a Florida map on the device, I presume I can just copy the respective Florida files into their respective folders, rather than every state map? I'll remove the UK maps first.
Cheers for the advice as ever
Hotpants