Hi
Look in C:\Program Files\Ubisoft\SilentHunterIII
And open
JSGME Silent Hunter III Explorer example
Will show you what to do
When you open JSGME up ( the cog icon ) you will get a screen pop up
The mods waiting to be installed are on the left and ones already installed are on the right
Pick a mod and click the arrow to enable
Read the GWX manual to see what each mod does
Welcome aboard