Mix cake according to box directions and add 1 small box of pudding mix. Bake according to directions. When cake is done poke holes in cake. Fix Jell-O, put 1 cup of boiling water, mix until dissolved, add 1 more cup of hot water and ladle over cake. Put cake in refrigerator over night. Then take cake out and set pans in hot water for a moment, turn upside down on cake plate. For the icing put cool whip in a bowl, add the other 2 boxes of pudding mix and 2 cups of milk, mix well and put on cake.