Well DVD's from regon 3 are from these parts of the world:
And a few others in that area
Region 1 is what we use for DVD's in the USA
From Wikipedia, the free encyclopedia
DVD region code
"Region 1–8" redirects here. For the ITU regions, see International Telecommunication Union region.
DVD RegionsDVD video discs may be encoded with a region code restricting the area of the world in which they can be played. Discs without region coding are called all region or region 0 discs.
The commercial DVD player specification requires that a player to be sold in a given place not play discs encoded for a different region (region 0 discs are not restricted). The purpose of this is to allow motion picture studios to control aspects of a release, including content, release date, and, especially, price, according to the region. Many DVD players are or can be modified to be region-free, allowing playback of all discs.
I looked on a few sites for region codes for your player but they all came up with same answer as this one http://www.videohelp.com/dvdhacks/magnavox-mdv453/3134
there doesnt seem to be any code available for your model to set it to region-0 (region free)