But that is the problem. Both vertex modifier and magos editor do not work on my computer. In magos editor I get the message 'Unable to create direct3d object'. I need help with plain MDL editing.
Editing geosets on the plain MDL editing level is impossible, because you cannot know what vertices you want to work with; the geoset is just a massive list of vertices and their data. You, sir, are in a bit of a pickle.
The problem with Vertex Modifier is that when I load a certain model (ex. bandit) it does not resemble anything.
Rao Dao Zao, maybe you misunderstood me. I already made that 'additional' mesh in max and merged it to the model with geosetmerger. Now I want to this newly added mesh assign a bone. I could do this in max, but the problem is that max importers are a bit buggy, and I will have to re-unwrap and redo all animations. So, if I would create and assign the bone directly in MDL, it would be much easier.