Place the cranberries in a 4-1/2-cup ring mold coated with cooking spray. Slowly pour a small amount of cold water into the mold to barely cover berries; freeze until solid. Add remaining water; freeze until solid.
Just before serving, combine grape juice and cranberry juice concentrate in a large punch bowl; stir in soda. Unmold ice ring; place fruit side up in punch bowl. Add orange and lemon slices. Yield: 5 quarts.