In a large mixing bowl, beat cream cheese until fluffy. In small mixer bowl, beat whipping cream, sugar and vanilla until soft peaks form. Gradually add to cream cheese, beating until smooth and creamy. Set aside a few whole cranberries from sauce for garnish. Fold remaining sauce into whipped mixture. Spoon into pie crust. Freeze 4 hours until firm. Ganrish with reserved berries. Remove from freezer 15 minutes before serving.