Chocolate Eclaire Dessert

2 Pkg Instant French Vanilla Pudding 8 Oz Cool Whip 3 Cup Milk 2 Pkg Graham Crackers   Blend pudding and milk together. Fold in cool whip. Put a layer of crackers in pan then put half of pudding, another layer of crackers, then rest of pudding. End with a layer of crackers. Spread with the following topping:   2 Squares Baking Chocolate 1 Tsp Vanilla 3 Tbsp Butter 1 1/2 Cups Powdered Sugar 2 Tbsp Corn Syrup 3 Tbsp Milk   Combine all ingredients except sugar in pan until butter melts. Stir in sugar until smooth.