Preheat your oven to 350°F (175°C). In a large mixing bowl, combine the boxed cake mix with water, oil, and eggs. Mix on medium speed for about two minutes until smooth. Pour the batter into a greased 9x13 inch baking pan.

Bake for 30-35 minutes or until a toothpick inserted in the center comes out clean. Allow to cool in the pan for about 15 minutes before transferring to a wire rack.

Once cooled, poke holes all over the cake surface at about one-inch intervals using a wooden skewer or fork.

Prepare the jello according to the package instructions, typically using boiling water to dissolve it completely.