3 c. water
1 6 oz. can frozen orange juice concentrate, thawed
1 6 oz. can frozen lemonade concentrate, thawed
2 c. cranberry juice cocktail
1/2 c. sugar
1 1/2 liters lemon-lime soda, chilled

In a large bowl, combine the first five ingredients; mix until sugar is dissolved. Chill for 1-2 hours. Just before serving, stir in soda.