For berry layers, combine sugar, cornstarch and water in medium saucepan, stirring to dissolve. Cook until thick and clear. Add gelatin; stir until dissolved.
Divide mixture in half. Stir blueberries and lemon juice into half of the mixture; spread over bottom of pie shell. Refrigerate. Fold raspberries gently into remaining half of mixture; set aside.
For cream layer, beat together cheese and sugar until smooth. Mix in the topping; spread over blueberry layer. Refrigerator until set. Carefully spread raspberry layer over cream layer. Chill for at least 4 hours before serving. Yield: 8 servings.