Key Lime Pie
["1 c. reduced fat graham cracker crumbs", "3-4 Tbsp. melted margarine", "4 1/2 tsp. Equal sweetener or 15 packets, divided", "1 envelope unflavored gelatin", "1 3/4 c. fat free milk, divided", "8 oz. fat free cream cheese, softened", "1/2 c. key lime juice", "light whipped topping, as garnish", "mint sprigs, as garnish"]
["1. Combine graham cracker crumbs, margarine, 1 teaspoon sweetener in 7-inch spring form pan; pat evenly on bottom and 1/2 inch up side of pan."]
["graham cracker crumbs", "margarine", "Equal", "unflavored gelatin", "milk", "cream cheese", "lime juice", "light whipped topping", "mint sprigs"]