In A Skillet Over Medium Heat, Brown The Ground Beef Until No Pink Shows; Drain. Stir In Onion Soup Mix, Oregano, Tomatoes And Water. Bring To Boil; Stir In Macaroni. Simmer Covered, Stirring Occasionally For 20 Minutes Or Until Macaroni Is Tender. Sprinkle In Parmesan Cheese And Top With Mozzarella Cheese.