How to make neck of avatar invisible

[Erikvdb]

Silly question, but where did you get the other head from if you haven't used a 3D program before? I'm going to assume that you'll still need a neck for the new head, so I was thinking it might be easier to remove the neck that comes with the new head instead of trying to remove the neck from the body.
Other heads from the Vizard Complete Characters collection should be interchangeable.