I'm new to SF2 but been playing SF1 for a little while. I got all 4 games and have been adding mods and had a question about file structure that I cant seem to find an answer to. In the add-ons folder in "My Documents" there are some files that seem to be able to be used no matter what file they are in and some that cannot. Aircraft seem to have to be in the individual game's folder for them to work in the different games (ie a plane in SF2V folder doesnt show up in SF2E) but terrain and missions will show up no matter what folder they are in (ie I can select Desert map or Vietnam in SF2E). What files have to be in a specific game folder to have the plane work (ie do files in the Effects, Flight, Sounds, Decals, Pilots, Weapons ect have to be copied to all folders). Thanks for your time and thank you to all the modders for adding so much content to this wonderful game!