If you want to take another risk (because it doesn't work for all computers and dvd drives), if you can find the zipped version of the VideoLan (VLC) player, it doesn't tell the OS what region the dvd is and should play it fine (but you need to tell Windows to do nothing with the dvd and then open it in VLC manually). I've had no trouble doing it this way and it won't region lock your dvd drive.