DVD Player's Help says:
"If you connect a TV to your computer you can watch DVD movies on it using DVD Player.
To learn how to connect a TV to your computer, see the documentation that came with your computer or search Mac help"
Sounds pretty straightforward.
Just remember not to change your Region more than 5 times, otherwise it will stick on the last region (unless it's got the earlier drive, in which case you can have 4x5 changes)