Hey John
Thanks for reply back.
Well, I understand that, and I know that exist some decrypters to broke the DVD content and burn again.
But, I just like to put some protection to do not make a copy easier ( like using the NERO, and just click "Copy DVD to other DVD"
I thought that just checking COPYRIGHT MANAGEMENT could work... but still the same note like " COPYRIGHT MANAGEMENT or CSS don't will work" .. and just ... don't protect the disc.
any idea why?
Cesar