Mix the orange juice concentrate, water, and pineapple juice together. Cook sugar and water for 5 minutes. Cool.
Add the 2 mixtures together and freeze in 5-quart ice cream bucket. Thaw slightly before serving (1 hour or more, depending on temperature of the day). Put in punch bowl and add 1 (2-liter) bottle ginger ale or 7-Up. Yields: approximately 5 quarts.