The jsgme_setup_v2.3.1.exe file you have requested: Utilities / Jones Soft Generic Mod Enabler - 730.69kb is not available. Perhaps try browsing all files for the game Silent Hunter IV: Wolves of the Pacific and upload any files you want to share or are missing. This is the only information we could locate:
This is a generic mod enabling program which allows you to swap mods in and out so you only need to have one stock install on yor drive. It's menu's allow you to select which mods and what order they are installed in. Plus, If you want to make a mission for stock and have a supermod installed, it allows you to disable that mod temporarily, which restores your install back to stock. It says it also has support for saves as well. Ofcourse, for this to work you must have installed the mod in question using the program in the first place.