1 c. Hellmann's
2 tbsp. vinegar
1 tbsp. prepared mustard
1 tsp. sugar
1 tsp. salt
1/4 tsp. pepper
8 oz. macaroni, cooked & drained
1 c. celery
1 c. green pepper
1/4 c. chopped onion

Stir first 6 ingredients. Add rest. Cover and chill.