Dissolve sugar in warm water to form a syrup. Divide mixture into 2 gallon size zip lock freezer bags at least. Combine with 6 oz Guava-Strawberry frozen punch. To serve, remove the slush from freezer and allow it to thaw partially. This can be done by placing the bag in a driper pan and beating with a spoon until the slush is broken up or by hands. Combine equal parts of mixture with carbonated beverage to hasten the process.