Easy Key Lime Pie

Why I Love This Recipe
Think this was on a Jello box, but now when I go to Jello.com the do not have it there. Really good, the teachers at school are always requesting it for the pay-day pot-luck.
Ingredients You'll Need
1/2 cup boiling water
1 3 oz box Lime Jello
2 containers (6 oz) Key Lime Yogurt
one 8 oz container of CoolWhip
two graham cracker crusts
Directions
mix 1/2 cup boiling water with
1 3 oz box Lime Jello.
Add 2 containers (6 oz) Key Lime Yogurt.
Blend in carefully one 8 oz container of CoolWhip. Place into two graham cracker crusts. Refrig for 3-4 hours.