Thank your for the feedback.
Yep - did it as recommended and checked the scenery tester.
Everything works fine - so far...
...except the fact that FSX:SE displays anything in the airoprt addon scenery window!?!
Is that normal?
...Finally one little question:
I added the medical library and try to find the locations.
Tried to place the helicopter by using the coordinates displayed in the kzm google earth file.
But wasn't able to find the helicopter landing pads.
Checked Anchorage and two others - but wasn't able to fly around because I have to update my computer at home.
But my Bell 206 simulator is placed in a garage a few kilometre away
I'll try again tomorrow when I will fly again.
Best regards
Tommy