BRING water and dressing to boil in large saucepan on medium-high heat. Stir in couscous; cover. Remove from heat. Let stand, covered, 5 to 8 min. or until all water is absorbed. Transfer to large bowl.
ADD remaining ingredients; mix well. Serve immediately. Or cover and refrigerate several hours or until chilled.
SERVE couscous with Sun-Dried Tomato Salmon.