Mixing the cake mix, eggs and vegetable oil together, and pour cake mixture into a coated cake pan. Bake for 30 minutes or until cake is done.
Remove from oven and poke holes in cake (using a large fork). This is so the Jello can absorb into the cake. In a separate bowl combine Jello with one cup of boiling water. Mix until jello is dissolved.
Pour dissolved jello mixture over cake. Refrigerate overnight.
Before serving spoon cool whip over cake, cut and serve.