How do I know if i had a sky box or not? I tryed those steps, but nothing happend. Everyone who downloaded it couldnt get it to work...... I'm not sure. Where do i find the Sky box and stuff like that? Other than that, thanks for the advice.
Did you knowingly create a skybox? If you don't even know what a skybox is, you didn't make one.
Interiors are those .dif files. I'm guessing that you don't have any of those are either.
Just make a .zip with a base\data\missions\YourMap.mis and YourTer.ter in it.
Then do what squarehead said.
Oh, wait, do you have custom textures on the terrain? If so you need to include those in the right place too.