Heat grill. In small saucepan, combine all ingredients except ham steak. Cook over low heat until jelly is melted, stirring occasionally.
When ready to grill, oil grill rack. Place ham steak on gas grill over medium heat or on charcoal grill 4 to 6 inches from medium coals. Brush with jelly mixture. Cook 8 to 10 minutes or until thoroughly heated, turning and brushing once with jelly mixture. Serve with remaining jelly mixture.