Scenery mapping / designing

hello everybody
i am interseted in knowing how to design a scenery some useful sites
secondly how to map the scenery/terrain in .map extension using opengl. i am interseted to know how can we map the sceneries as we have in flight simulator 2002 etc. we an have those scenery files of different airports and then we map them can we do that in opengl and from where to get those 3D scenery files
thaks in advance

stuff like that is hard, to load an render a map file from a different game is tricky, you must learn the file structure and write to code to open the file and then render it. i myself have only done realy simple file reading and rendering.

and for heightmapping, check out