Preheat your oven to 350F. Cream together the shortening, both sugars, and eggs. Sift together the flour, soda, baking powder and salt then add to the shortening mixture. Add water and vanilla to mixture.
Add oatmeal and mix well, then add your chips and walnuts. Roll into balls the size of a walnuts and place on cookie sheet. Bake for 10 to 12 minutes or until they set slightly. Makes 3 dozen.