Lightly grease 13 by 9 inch square pan and set aside. MICROWAVE margarine in 4-quart microwavable bowl on HIGH for one minute or until melted. Add sugar and milk; mix well. MICROWAVE on HIGH for 5 minutes or until mixture begins to boil, stirring after 3 minutes. Mix well; scrape bowl. MICROWAVE on HIGH for 5 1/2 minutes, stirring after 3 minutes. Gradually stir in chips until melted. Add remaining ingredients; mix well. Pour into prepared pan. Cool at room temperature; cut into squares. Makes 3 pounds.