Add macaroni, and cook for 8 to 10 minutes, until tender. Drain, and set
aside to cool.
In a large bowl, stir together the eggs, onion, celery, red pepper, and
relish.
In a small bowl, stir together the salad dressing, mustard, white sugar, vinegar,
salt and celery seed.
Pour over the vegetables, and stir in macaroni until well blended.
Cover and chill for at least 1 hour before serving.