Cake:

1. Butter The Pan
2. Line With Graham Crackers
3. Beat Pudding and Milk together
4. Fold in Cool Whip until mixed
5. Pour half of mixture over crackers
6. Line with crackers and pour rest of mixture over top
7. Top with crackers

Frosting:

Melt chocolate and margarine in a pan on the stove.  Add remaining ingredients and mix well.  Pour over crackers and place in fridge to cool and set.   Cut into squares and serve.