Will a region 1 dvd play in a european computer?

I really want Watchmen directors cut a href="http://www.play.com/DVD/Region_1/4-/10108724/Watchmen-Director-Cut/Product.html?ptsl=1&ob=price&fb=1" rel="nofollow"http://www.play.com/DVD/Region_1/4-/1010…/a but its only been released in America so id hav to buy this dvd however it also has a digital copy would this work on itunes in europe (uk)?