Graham, the Overstedt scenery files from rcsim.de are "raw" panoramic image files and they need more processing before they can be installed and work in AFPD. If you read the text file in the download, it says you will need to use an AFPD wizard to "create new scenery from pano image". I don't think this wizard is available anymore, and you will still need to map the scenery for collision after that. So, it's a lot of work. Well, there are plenty of good sceneries to choose from. Enjoy!