use ports i have never heard of demians
unless you mean the one for blender 2.49b in which case it wont work with blender 2.77 as you are currently using. you'll have to install 2.49b, save your item as a legacy mesh, and then open in 2.49b to add the nodes.
(btw its not demians, he just posted permanent DL links to them)
for ports you dont use armatures, you use empties.