Prepare cake mix according to directions. Pour 1/2 batter into buttered ad floured 9x13" pan. Set other batter aside. Bake at 350 degrees for 18 minutes. Melt caramel and milk together, then stir in pecans. Sprinkle baked part of cake w/ chocolate chips and pour caramel mix over that. Pour remaining batter over the top. Continue baking for 20 minutes. Cut into squares to serve. ----