Thawed and undiluted:
1 (6 oz.) can frozen orange juice
2 (6 oz.) cans frozen limeade
2 (6 oz.) cans frozen lemonade
1 c. sugar
3 1/2 c. water
2 c. vodka

Mix ingredients together well. Freeze for 48 hours. To serve: Spoon 3/4 cup of frozen mixture into a tall glass. Fill with 7-Up.