pour milk into a small metal bowl, place mixer beaters in the bowl. cover and refrigerate for at least 2 hours or overnight. line the sides of a 9 inch springform pan with lady fingers, set aside.
in a large bowl, dissolve gelatin in orange juice. stir in the sugar, lemon juice and peel, cool to room temperature.
beat chilled milk until soft peaks form, fold in gelatin mixture. pour into prepared pan. refrigerate for at least 3 hours or until firm. spread with whipped topping. remove sides of pan. refrigerate leftovers.