Good day everyone

Here is my problem:

I have two skeleton.nif:

one is a mount skeleton, the other is a creature skeleton but they represent the same animal, a "Venison".

I have an horn model that goes to the creature and I would like this model to be also appearing in the model tab of the creature mount when I pick the mount skeleton.nif

How do I go about "rigging" (not sure if that's the term) that model to the creature mount so I can pick it up when I am selecting the mount in the CS?

Thanks guys for your help.