In a mixing bowl, cut margarine into flour. Add 1/4 cup walnuts. Then pat into an ungreased 9 by 13 pan. Bake at 350 for 15 minutes. Cool. Now mix cream cheese and sugar. Add 1/2 cup cool whip to mixture. Spread on to cool crust. Mix both pudding mixes with milk. Mix until semi-firm. Spread on top of crust and cheese mixture. Spread remaining Cool Whip on top and add remaining 1/4 cup of nuts as garnish. Refrigerate for an hour. Walt Mm