You could also probably use generic mod enabler software. There are various ones out there. I used JSGME (jonesoft generic mod enabler) for silent hunter. They can be used for all sorts of games, because the only thing they do is creating a backup of your original game files and copy the files in your mod's directory over the originals. For the user it is just checking/unchecking a tickbox. It probably needs a bit of configuration, telling the software where the game data folder is.
(as far as I recall, because it has been a while, and I haven't tested it with other games than silent hunter)