If memory serves, the Mosehansen Faerun is the oldest version. Thus, you'll need a faerun.tga for the map graphics; you can rename the superior faerun_large.tga and it works fine, I seem to recall. (Although a few neighbor connections mightn't be right, but that's what the map filter is for...)
As for the map file, you'll only need a simulacrum; the map file on the client isn't used, I think, so if it asks for one just rename some file to faerun.map and it should work. If you want to look and see what provinces have what preplaced things, can't help there. Most are probably the same as in the newer version, but there are a lot of preplaced forts which really make the map unfun, in my opinion. Edi probably has the older versions archived (seeing how he's apparently got a thing for keeping things in good order, which is great!
), so if you really need 'em, PM him!