1. In medium mixing bowl, combine KELLOGG'S CORN FLAKES cereal the 2 tablespoons sugar and margarine. Remove 2 tablespoons for topping. Press remainder evenly and firmly in bottom of 8 x 8 x 2-inch pan to form crust. Chill.
2. Drain pineapple, reserving liquid. Set aside. In 1-quart saucepan, mix gelatin, sugar and salt. Add pineapple syrup and lemon juice, mixing until smooth. Cook over low heat, stirring constantly, until gelatin is dissolved. Cool slightly.
3. Place cream cheese in mixing bowl. Beat until soft and smooth. Gradually add gelatin mixture and pineapple, stirring until combined. Set aside.
4. Pour cream into chilled bowl. Beat until stiff. Fold into cream cheese mixture. Spread evenly in crumb crust. Sprinkle with reserved topping. Chill until firm, about 2 hours. Store in refrigerator.