Double check though, that any DVD player that plays PAL/NTSC either outputs only NTSC or has selectable output. I had a Philips player that could play both....but the output was in the original format only.
Newer DVD players seem to be better at this...but just check and make sure first....if you do have to get a new DVD player, you may as well make it region/code-free as well.
Are those the movies with the Alligator in the sewer?