that i cant help you out... i think there is some information in the technical information thread here, but you're best bet is probably doom9.org or videohelp.com. Im pretty sure this is a far more involved process that involves changing the framerate and stuff...think there is some 'quick & easy' programs to do it, but dont know of their quality and wouldnt be able to point you there. You're best (easiest) bet here would be to buy a cheap dvd player that plays PAL and NTSC (this would probably also be hackable to region free eliminating your need to run it through dvd shrink)

-Darth Simon