Soften the gelatin in the cold water for 5 minutes.
Combine the sugar and boiling water in a saucepan over medium high heat; boil gently for 10 minutes.
Stir in the gelatin mixture and pour into a large bowl.
Let stand for 15 minutes.
Add the grape juice, lemon juice and orange juice; mix well.
Pour into a 1 1/2 quart glass dish.