Hi rick bagby27!
About the JSGME, remember a "Mod" are no more than modified files that replace the original files.
JSGME is simply a program that helps, making it much easier and more automatic to add new files, new mods (new textures, for example) or remove them (restoring previous files automatically) from what would be manually. So what you should do is:
- Download JSGME.
- Install in SH4 folder (in my case the game is at D:\ Programs\Steam\steamapps\common\Silent Hunters wolves of the pacific)
- JSGME generates a folder called MODS inside the main folder of the game (D: \***common\Silent Hunters wolves of the pacific\MODS in my case)
- Put the mods into the MODS folder
- Run the JSGME (the executable is also in D:\***common\Silent Hunters wolves of the pacific)
- Activate or deactivate the mods by clicking on the arrows
- Close JSGME and, finally, run the game.
As for the files you modified, I have no idea what they might be or where they are. However, a tip: always make a backup of the original file when you are going to modify it manually.
Finally, I have no problems opening .cfg files with the notepad. Maybe you're trying to open a .sim file? For that you need the S3D - Silent 3ditor.