well mine is a very low budget R2 dvd player & when i bought mine i "asked" the salesman if he would give me the code to unlock it to make it multi region.
I think im right in saying ALL dvd players are multi region but due to copyright laws (i think) they have to be set to a standard format for the country or region they are being sold in.
might be worth running a google search with your "dvd make, serial number & multi region unlock code"
or something along those lines, has always worked for me mates!
btw that addy is www.google.co.uk (just in case ya didnt know)