Microwave chocolate squares and margarine on high for about 2 minutes, or until margarine is melted. Stir until chocolate is completely melted. Stir sugar into chocolate, mix in eggs, and
then stir in flour. Spread ½ of batter in a greased 13" x 9" baking pan. Bake at 350°F for 25 minutes, or until batter is firm to the touch.
Microwave caramels and cream in bowl on high 3 minutes, or until caramels begin to melt. Whisk until smooth. Stir in 1 cup of pecans. Gently spread caramel mixture over brownie batter in pan.
Sprinkle with chocolate chips. Pour remaining unbaked brownie batter evenly over caramel mixture and sprinkle with remaining pecans.
Bake an additional 30 minutes. Cool in pan and run knife along edge of pan to loosen brownies out.