Welcome to Subsim.
As suggested, the forums can help you with the mods. Look for JSGME which basically stands for Jonesoft generic mod enabler . Be aware this is for Mods. To install GWX supermods and the like, they have to be directly installed in the game folder itself. With Win 7 and above, don't install into the default path and look for the patch to play the game without the DVD installed. Hope this helps.
http://forums.ubi.com/showthread.php...Enabler-Forums