Thanks nikagl. I have been reading and reading and slowly I am getting there. For now I have taken the easy way !! I have downloaded your iso 27.1 with Dutch text and voice (replacing the German).

What I am trying to do (please tell me if this wouls be impossible):

Keep the original english (voice, menu lcd, and dash)

Create a second language whereby the voice and lcd display are Dutch but the dash remains English.

I can live very well without german or french on my dash/lcd screen or voice