shortly explained: in your mod you have folders, like sound-gfx and so on... switch them with those which are in your soldat folder. make sure you have backup.
There is really no need to do it in this way.
Simply extract the mod into its own directory within the Mods folder (located where you've installed Soldat), and use the Soldat mod starter to actually load it. Simple as.
This is also in the wrong section. :P