Plyy your a really nice person, thank you for your advice.

We ran through as you advised, we found a small problem, the Nuvi 255w does not seem to appear in "Computer" where you see all the drives attached.
Seems like nuvi is just not being recognised, so we also did a "disk management", in case it was there and just needed adjusting. Howerver it was not there either. We tested it on 2 different PCs both no joy.

Any further ideas you can help us with.

P.S. Your really nice for assisting us, thank you