CHOCOLATE CAKE
2C Sugar, 1-3/4 Plain Flour, 3/4 Coca, 1t Baking Powder, 2 Eggs, 2t Vanilla, 1-1/2C Milk, 1/2C Oil
ICING (You can use the basic one if you like)
125g Butter, 1C Icing Sugar, 1 D Rum, 125g Philadelphia Cheese, 2D Coca 
Combine all ingredients together in a large bowl, beat together for 3 minutes on HIGH, pour into a greased microwave safe container, cook for 20-23 minutues on Medium.  Allow to stand for 5 - 10 minutes before turning out.  Allow to cool before icing.
This is based on a 1000W microwave.