Combine vinegar, sugar, dill week and salt in small bowl. Gradually stir in e. Milk until slightly thickened. Blend in salad dressing . Stir in onion and parsley. Cover and cill at least 1 hour. Cook macaroni according to package directions, drain; rinse well; cool. Combine macaroni, salmon, celery and radishes in large bowl. Pour dressing over all; toss lightly to coat. Garnish. Makes 6 servings.