In a small bowl, add boiling water--dissolve Jell-O in water and stir thoroughly. Set aside to cool.
In a mixer, combine white sugar, vanilla and cream cheese--beat until smooth. Pour cream cheese mixture in a bowl and clean mixing bowl so you can use it again.
In cleaned mixing bowl, whip the can of Carnation milk. Add cooled Jell-O mixture to the whipped milk--mix well. Add cream cheese mixture to the whipped milk mixture--mix well.
Pour some graham cracker crumbs on the bottom of a glass pie plate. Pour whole mixture on top of the crumbs. Sprinkle more graham cracker crumbs on the top. Keep refrigerated.