This may be a stupid question, but I was just wondering if having a type rating in a DC-10 also meant you had a type rating in a MD-10? Now I know this may be an even dumber question, but what about an MD-11?

I know the MD-11 has updated engines, avionics, winglets, and I believe it's slightly longer, but what are the major differences between a DC-10, MD-10, and MD-11?

Thanks!