Hi, I am a 3d character and environment artist.
I am also a Skyrim fan, and have modded it for my self, using "pred-caliber" channel's youtube tutorials.
You can rig mostly humanoid character models to Skyrim, they are easier however others can be converted as well but with much difficulty.
Having experience in skyrim I can help you as much as I can.
Feel free to contact me anytime.