sylph's Mock Sangria

Mix together 1 cup of orange juice, 1 cup of lemon juice, and 1 cup of sugar. Add 8 cups of grape juice--the 100% kind, not the cocktail. Chill this, then just before serving, pour it into a punch bowl with an ice ring or just a bunch of ice, add 2 cups of chopped fruit, which you can buy already done, and then add 4 cups of club soda. That will make 16 servings.