hehe, well, assuming that you could put however many balls on the scale at one time as you wanted, it's just as Teckmaster said in the old thread that loogie posted:
"The first weighing you put 6 on one side and six on the other
Second weighing - whichever six was heavier break down and put 3 on one side and 3 one the other
Third weighing - whichever side was heavier put one ball on each side and see which side is heavier. If both are the same then the third ball is the odd ball"
EDIT: Actually, I suppose it's a bit more complicated than that.....but hell, that old thread is freakin' long and I don't really wanna know the answer THAT bad.