As I suggested in my previous post, I think that you should embrace simplicity when it comes to pumping iron. I don't know what has been your experience with weights, but if its minimal, keep it simple. You definitely want to pump iron, but your movements should be those that work for you. Again, for triceps, I suggest pressdowns as the simplest and best. You'll have better control of the movement. Learn the movement first (very! light weight), then as you feel confident, start increasing the weight (progressive resistance). Remember, you are trying to build muscle tissue under the fat tissue.