Bring water to a boil, and add shrimp. Cook shrimp 3 to 5 minutes. Drain and rinse with cold water. Peel and devein shrimp; chill.
Combine salad dressing and next 7 ingredients (salad dressing through pepper) in a large bowl, and stir well. Add shrimp, and stir.
Line a large platter with sliced lettuce. Spoon shrimp mixture into center of platter; arrange grapefruit sections and orange sections around salad. Sprinkle salad with chives.