Saute celery, onions, bell pepper and Tony's in butter. Add diced tomatoes and juice. Cook on medium heat about 10 minutes. Add crawfish, cover and cook another 15 to 20 minutes.
While sauce is cooking, boil pasta about 4 minutes. Drain. Add olive oil and 1/2 package of herb and garlic dressing to pasta. Stir in well and sprinkle Parmesan cheese on top. Pour sauce over pasta and serve.