How can I change the area code for DVD's?
I brought some DVD's from Germany and watched them on my Mac Pro. After the DVD was involved in the drive I have to change the area code for the drive. I don't know why but I did it. I could watch the film. Today I like to watch a DVD from US but after the DVD was involved I got a message "the area code does'nt match the DVD code" and I can not change the area code.
What can I do to watch both arts of DVD's. Isn't that normal to have DVD's all over the world?
MacBook Pro, Mac OS X (10.7.2)