Simply question here.In my FS9 folder in Doc and settings this is where FS.cfg lives I have 3 folders here too.Facilities,scenery cache and my current aircraft folder with all my planes in it.Is that right????I have been getting ATC.DLL and unknown.dll crashes now and hunting around i found this "Problem" maybe.Thanks in advance

That is correct. Those three folders should be there.Aircraft folder: actually all that is in each aircraft's folder is a "state.cfg" that reflects engine(s) accumulated time(s)and the textures flown. Sort of a hidden Hobbs meter...of sorts.Facilities: contains index type IDX filesSceneryCache: probably empty unless you have selected/elected to cache your scenery.