crust: * 1 cup graham craker crumbs * 3 tbsp margarine * 2 tbsp Sugar or 3 sugar substitute-packets filling: * 1 envelope unflavored gelatin * 1/2 cup cold water * 8 oz light cream cheese * 3 tbsp Sugar or 4 sugar substitute-packets * 1/8 tsp ground ginger * 1/2 cup skim milk * 16 oz peach lowfat yogurt topping: * 2 fresh peaches, pitted-peeled, & sliced * 1 tbsp lemon juice