<evil grin> Ohh, I remember this story. So, was that meant to be continued or did you finish it and I just don't have it all because it's a *.rtf (whatever that is)? If it's not finished, here's my idea on what they would wish for..(do I smell a contest? we need new excitment around here..). I have two variations..idea #1:
Cartman wishes for all the Cheezy Poofs in the world, the factory falls on him and kills him.
Kyle wishes for new parents, only to receive the parents from Hell, who kill Kenny.
Stan wishes to see Cartman and Kenny again, only to have them return from the grave. Since all 3 wishes have been used, they are helpless against them.
2nd Version:
Kenny quickly wishes before anyone else can, and wishes to never die again. He dies permanently.
Cartman wishes to never be teased again (I need SOME opportunity for suffering). As a result he cannot eat any snacks and has a passion for tofu and alfalfa sprouts.
Kyle: (parents from Hell again, the kids are left helpless)