Mix together the following: 1 pkg of orange kool-aid, 1 pkg of cherry kool-aid, 1 pkg of tropical punch kool-aid, 1 gallon of water, 2 3/4 cups of sugar,    Mix well.  Right before serving, add 7-Up, about 2/3rds to a full 2 liter bottle for carbonation to taste. Then add scoops of pineapple sherbet  to float in the punch. As the sherbet floats, it will melt into the punch. Really good!   We've had lots of good comments on this punch! Enjoy!