Alpha Rom protection

Hello,

I am completly new here and i am copying dvd for a long time now. I have a navigation dvd with the settec alpha rom protection. (New Opel CD500 Nav and DVD800 nav)
I want to backup my navigation dvd because i have small kids. But i cannot get a working solution for this.

On the internet i found that cd manipulator did the trick. Only this is for cd’s and i have a dvd.
Everybody i telling something about www.tomcat.jp. But this site is also already 5 years old and not beeing moded.

So can someone please explain on how to copy this.