Ponderosa Steakhouse Seafood Penne Pasta Salad

1 pound imitation crab meat
1/2 cup onions, chopped
1/2 cup green peppers, chopped
1/2 cup celery, chopped
1 1/2 pounds penne pasta (cooked)
1 pound sour cream
1 pound ranch dressing (one 16 ounce bottle)
1/4 cup milk

Cook and cool pasta. Mix sour cream, dressing and milk (let sit 2 hours).

Mix together onions, peppers, celery, crabmeat and pasta. Mix well with dressing. Chill at least 2 hours.