CCFJ1, Thanks for all your answers, fantastic! What do you mean with
Note: Don't create new disc from scratch, it will not work

E.g. I have already a disc with POI's using the software PimpMyNav, because i don't know how to do add this in the Navigation DVD so the POI's will be visible in the Mini Cooper. Can I use this disc with POI's already? I advice people to use Notepad++ as a hex editor