Welcome to the Forum.
There is a world of difference between CHANGING the CopyRight of a movie (which I doubt the Motion Picture Studio would allow) and REMOVING the Copy Protection Scheme of a Commercial Movie Title.
Exactly what are you attempting to do?
I believe it would be prudent for you to visit the MovieLink Web Site (http://www.movielink.com/store/web/help/eLanding.jsp) and actually read what is clearly posted there. In particular the below quoted excerpt from the referenced MovieLink Web Site.
â€œCOPYING AND EXTERNAL STORAGE
You may copy a purchased movie in its original Windows Media Player format to a CD or DVD for backup storage or to play on another PC (if allowed by the terms of that content provider). However, at this time you can not burn movies to play in a conventional DVD player.â€