1. Preheat oven to 350 degrees Fahrenheit.
2. Cream together margarine and sugars in large mixer bowl. Add eggs.
3. In a separate bowl, combine dry ingredients and add to margarine mixture, alternating with orange juice. Stir in chocolate chips and mix into batter.
4. Pour into greased and lined nine-x 13-inch pan and bake for 45 to 55 minutes, or until toothpick inserted in center comes out clean. Remove from oven and set aside to cool.