Put margarine in oblong cake pan and melt in oven, then put 1 egg in along with cake mix. Stir with a fork, and mix together. Press in bottom of the cake pan. Press 1 1/2 cups chopped pecans into cake mixture. Mix confectioner's sugar and cream cheese together with 4 eggs, one at a time. Pour over top of cake mixture and bake at 350 degrees for 40 minutes, no longer. Take it out at that time, it will be done.