Using fresh pumpkin is easy and you can preserve some for later if you cook up too much.  My simple method is to preheat the oven to 350.  Wash your pumpkin, leave it whole.  Use a sharp knife to poke several holes in your pumpkin to allow steam to escape.  Place your pumpkin on a pan with sides all around (a roasting pan works well) and place in the oven.  Cook for at least 1 hour.  It is done when