thanks catymag,
It seems there are not many alternatives for navigation with a laptop or tablet.
Apart from Quovadis, Oziexplorer, Fugawi, which programs I find overly complicated, could you recommend anything else?
I really liked to have a big laptop screen in the car and be able to "look far ahead" in a moving map. The biggest screen GPS you could get is a montana or Zumo 660LM.

obrigado