Preheat oven to 350 degrees F (175 degrees C). In a medium bowl, combine graham cracker crumbs, butter and confectioners' sugar. Mix well and press into the bottom of a 10-inch springform pan. Bake in preheated oven for 10 minutes. Remove from oven and allow to cool. Turn off the oven.
Dissolve lemon gelatin in boiling water. Let cool until thick, but not set. In a large bowl, beat cream cheese, white sugar and vanilla until smooth. Set aside.
In a separate bowl, whip evaporated milk until thick and stiff peaks form. Pour in lemon gelatin and keep mixing until well blended. Fold in cream cheese mixture.
Pour filling into the crust. Chill in the refrigerator for at least three hours before serving. Yields 1 - 10 inch round pan or 9x13 inch pan.