Frozen Chocolate Mousse(10 To 12 Servings)  
["1 tsp. butter/margarine", "1 tsp. powdered sugar", "1 pkg. ladyfingers *", "1 c. chocolate chips", "3 Tbsp. water", "4 eggs, separated", "1/4 c. sugar", "1 (8 to 12 oz.) pkg. whipped cream (Cool Whip)"]
["*Optional:", "Substitute 2 cups graham crackers, or butter cookies, or animal cookies, or Nilla wafers, or...and 1/4 cup melted butter for crust."]
["butter", "powdered sugar", "ladyfingers", "chocolate chips", "water", "eggs", "sugar", "whipped cream"]