Spread cherry pie filling in bottom of ungreased 9x13 baking dish. Cover evenly with crushed pineapple. Sprinkle dry cake mix over pineapple. Sprinkle chopped pecans over top. Spread thinly sliced margarine evenly over pecans. Bake in preheated 350 degree oven for 25-30 minutes. Cool completely before serving. When cool, cover with whipped cream and garnish with maraschino cherries. ----