Slice hot dogs into 1/4" pieces. Melt margarine in frying pan and saute onion briefly. Add hot dog pieces and saute 1-2 minutes, until lightly cooked (Cook longer if prefer you hot dogs very well done).
Add mushrooms and garlic and saute together. Add crushed tomatoes, salt, pepper. Stir together, cover, and lower heat. Simmer 15-20 minutes, stirring occasionally.
Cook the pasta while the hot dog sauce is simmering. Drain pasta when finished. Add the hot dog sauce to the cooked macaroni, blend together, and serve.