1 box white cake, 12 oz 7 up, 1 box strawberry Jello, Cool whip & fresh strawberries. Combine cake mix with diet 7 up, bake as labeled on box, then cool. Poke holes in cake with fork. Mix sugar free Jello with 1 cup hot water, stir until dissolved then add 1 cup cold water - pour over cake. Refrigerate for a couple hours. Spread fat free Cool Whip over cake and top with fresh strawberries.