I didn't make it!
What folder do I save new SWBF1 maps into? Don't you just extract the zipped folders into AddOn?
That should be all you need to do. Though make sure the folder names are only three characters long.
My SWBFI (After being installed) didn't have an "addon" file. Do I make one? I've tried that, but it won't work. It says that some outside file has corrupted some files.