Ice Cream Cake

2 1/2 cups graham cracker crumbs

1/2 cup sugar

1/2 cup margarine -- melted

1/2 gallon vanilla ice cream -- softened

12 ounces pink lemonade, frozen concentrate -- thawed

Mix crumbs, sugar and margarine in bowl. Press mixture in bottom of a 9x13 inch pan, reserving a small amount to sprinkle on top. Mix ice cream and pink lemonade and spread on crust. Sprinkle with remaining crumbs and refreeze.