On the "Sunsite.org" FTP site, there is a folder"Airport Overlays". Can anyone tell me what istherein contained and how it is to be used withFG?Tom

At the SunSITE Northern Europe site, those look like scenery maps. Normally you would use the little install & uninstall scenery program which (at least in my win install) are in Start -> Programs -> FlightGear -> Install and Uninstall Scenery.(http://wwwtest.sunsite.org.uk/package/fgfs-flightgear/AirportsOverlay)