In a large bowl, mix all 3 boxes jello with 4 cups boiling water. (Mix well) Add crushed pineapple, sweet pickle juice, and pickled beets. Mix well and pour into a 9 by 13 casserole dish. Place in refrigerator to set for a few hours.
In a medium bowl, mix together sour cream, mayonnaise, onion, celery and bell pepper. Mix well and let set for several hours or overnight in the refrigerator. Top salad with this dressing.