As Tuvok says, you can change the DVD region on a computer but only a few times before your computer's DVD drive becomes permanently locked to the last region you entered. Further, you're not offered the option automatically when you insert a DVD from a different region. (You simply get an error message). So you have to go via the Device Manager to do it:
http://drm-assistant.com/dvdtips/change-reset-dvd-region-code-in-windows8.html
(That's for Windows 8 but it's basically the same for any version of Windows).
I buy quite a few international DVDs and use a multi-region player. If you think it likely you'll be buying other non-European DVDs in future, such a player could be a worthwhile investment:
Amazon.co.uk User Recommendation