1Bring a pot of salted water to boil, place potatoes in water. Boil until potatoes are tender. Drain well. Let the potatoes cool 30 minutes.
2Peel the skin off of the potatoes and cube them.
3In a medium size mixing bowl combine potatoes, mayonnaise, ranch dressing, onion, celery, green pepper, salt and pepper. Cover and refrigerate until well chilled.