I haven't tried DVDSHRINK on DVDs from other zones, but it can remove the zone limitation so this is a non-issue.
As it is, in stock form and as supplied, you can only watch the DVD Zone the drive is set for.
Bob
I'm looking to purchase a dvd drive for my computer so that I can watch films, and I'm just wondering how they work with regard to the dvd zones - will I be only able to watch dvds from only 1 zone or are they capable of playing dvds regardless of zone?
Thank you

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic