Heat oven to 375~. Grease a 9x13-inch pan. Sprinkle coconut and pecans evenly over bottom of greased pan. In a large bowl, combine cake mix, water, oil and eggs at Low speed until moistened; beat 2 minutes at High speed. Spoon batter evenly over coconut and pecans. In another large bowl, combine confectioners' sugar, margarine and cream cheese; beat until smooth and creamy. Spoon evenly over batter TO WITHIN 1 inch of edge. Bake at 375~ for 43 to 53 minutes, or until a tothpick inserted in center comes out clean. Cool completely. Cut into squares. Invert each square onto individual plates. Serve warm or cool. Store in refrigerator. Wis/Gramma ----