Logging in as root enables you to make greater changes to the entire system BUT you must use it with care if you don't know what you are doing!

The Root user is effectively GODMODE for the...

Try using Shredder, it's shareware and it will permanently delete ANYTHING dragged onto it's icon.

Region changes for your DVD are completely legal, it's only copying commercial DVD's that gets you into trouble. Writing your own DVD's to region 0 means they can be used by ANY other country.

Try...