Pineapple Upside-Down Cake
["12 slices pineapple", "1 c. firmly packed light brown sugar", "1/3 c. butter or margarine, melted", "6 maraschino cherries, halved", "1 pkg. yellow or white cake mix", "4 eggs", "1 envelope Dream Whip whipped topping mix*", "1 c. cold tap water"]
["*Do not whip; use right from envelope."]
["pineapple", "brown sugar", "butter", "maraschino cherries", "eggs", "cold tap water"]