If you don't know what you are doing please don't help people.
ModelLoader is the correct way, the ItemModelMesher is discouraged.
Please dont say "dont help people"... To what I knew, that was how to register renders and I was just trying to help while there was no moderator that came in...... To my knowledge, that's what a forum supposed to be... Sometimes people in forums are trying to help while they may not be right 100%....