Put ham on a rack in a shallow baking pan. Score the surface of the ham, making diamond shapes 1/2-inch deep. Bake at 325 degrees for 2 hours. In a small saucepan, combine the remaining ingredients; cook and stir until smooth. Brush ham with glaze. Bake 20-25 minuteslonger. Brush occasionally with remaining glaze. Makes about 15 servings.