1.Preheat the oven to 425 degrees.
2.Gently mix graham cracker crumbs and diet margarine.
3.Take an 8 or 9 inch non stick pie pan; put the mixture on its base and press it hard.
4.Bake for 6- 8 minutes until brown.
5.Allow the crust to cool prior to filling.
6.Fill and serve the pie as desired.