Hi Runnerbean Wecome to SubSIM
when I got my new pc I tried to install SH3 and Commander mod to c:/program files x68 and they didn't like it sh3 kept crashing
so copied n pasted original sh3 install to a folder in my documents called Wolfpack and the Commander Mod installed in another folder called Wolfpack HQ and it works swell no more crashing
you will also need the GWX gold Commander mod config file you install that in your SH3 folder of your GWX install link below for commandercfg file
when you install your commander mod it will ask you where your sh3 is located so direct it to your sh3 install so sh3 and the commander mod will talk to each other so to speak when you have installed the commander mod unpack and run the commandercfg in you sh3 folder were your games installed n your good to go
happy hunting
http://www.thegreywolves.com/downloads/