In a small bowl combine gelatin and cold water. Set aside.
2 packages gelatin, ½ cup cold water
 Heat the milk and combine milk and gelatin together. Boil in the microwave for 2 minutes.
2 cups milk,
 While milk and gelatin are boiling up, in a separate bowl combine together the sugar, sour cream, and dry vanilla.
1 cup sugar, 2 cups sour cream, ½ tsp dry vanilla
 Combine milk with sour cream mix. This is the whipped part of the layered jello. Keep it warm so it does not stiffen quickly.
 Pour a thin layer into a baking dish or cups.
 For the jello, follow the package instructions on each box. Mix each color as soon as you are ready to put it in your dish.
4 packages Jello,
 As soon as each color layer stiffens in the fridge, pour another layer and refrigerate. Continue until the dish fills up. And there you got a colorful and fun treat!