1 lg. pkg. Jello, any flavor
3 c. boiling water
3/4 c. sugar
2 sm. cans frozen lemonade
6 c. cold water
1 lg. can pineapple-grapefruit juice
1 pt. (2 c.) vodka

Dissolve Jello in the boiling water and sugar. Add rest of ingredients and freeze. Put slush in glasses and add 7-Up.