Blend cream cheese, mayonnaise and sugar. In separate bowl, stir together pineapple, cranberry sauce and nuts. Add to cream cheese mixture. Gently stir in whipped cream. Pour into a 9 x 5-inch loaf pan. Cover with heavy-duty foil and freeze. Slice frozen snowberry creme into 3/4-inch portions and serve. You may need to let it soften a bit in the refrigerator before slicing.