1. Mix together the first five ingredients and set the bowl in a bowl of hot water. (Mix your ingredients in a smaller bowl and put hot water in a larger bowl. Set the ingredients bowl in the hot water tand beat with a spoon to help thicken the liquid.)
2. Stir until consistancy of custard.
3. Add the coconut and graham crackers to the above mixture.
4. Put in 9 X 13 inch pan.
5. Mix together the next 4 ingredients (4 T butter, 3 T. milk, 2 T vanilla pudding mix and 2 cups powdered sugar).
6. Allow to harden.
7. Melt 4 square semi-sweet chocolate and 1 T butter in microwave.
8. Spread over top of hardened filling.
9. Refridgerate.