A protected DVD is a DVD movie that contains CSS or Content Scrambling System, which is a digital rights management to protect commercial DVD movies.
This article is dedicating to demonstrate how to backup copyright protected DVD movie to computer and copy DVD to a new DVD disc with no protections on Mac OS X (including Snow Leopard).
http://www.aimersoft-mac.com/articles/how-to-copy-protected-dvd-on-mac.h...
