Sift together flour, baking powder and salt and set aside. In a large mixing bowl, beat eggs with electric mixer on high speed for 5 minutes, gradually beat in granulated sugar. Beat in vanilla. Add to dry ingredients, mix well. Spread batter into 15 X 10 X 1-inch jelly roll pan that has been sprayed with baking spray with flour. Bake at 375 degrees for 10-12 minutes or until cake springs back when lightly touched. Cool 5 minutes. Turn cake onto a kitchen towel dusted with confectioners' sugar. Roll up cake in the towel. Cool completely on a wire rack.