Mix together cake mix, eggs, evaporated milk and oil. Grease 4(9 inch)

cake pans and divide batter. Bake at 350 degrees for 10-12 minutes. Cool

on rack.

Filling: Beat vanilla, butter, shortening and sugar for 10 minutes; add

milk gradually. Continue beating until sugar is dissolved and it is light

and fluffy about 20 more minutes.

Ice between layers with filling and frost top and sides with chocolate

fudge frosting.