Tip: A great source for dvdid.xml files
If you use the MyDVD's feature in Media Center (and if that doesn't mean anything to you then take a look at http://thegreenbutton.com/forums/thread/77389.aspx) then you will know how difficult it can be to find the right dvdid.xml files for your dvds. Help is at hand - DVDxml.com currently catalogs over 15,000 DVD Titles (currently Region 1 only) and their dvdid information.