site provides firmware upgrades for different kinds of computers:
pc, Mac, Linux, and BeOs users. It provides information for
getting your DVD ROM drive region free and recommends this site: http://www.dvdidle.com.
There is also a link to their DVD shop. http://www.regionfreedvd.net/rom.html
This site has a long list of software
based decoders and hardware based decoders: http://www.digital-digest.com/dvd/downloads/playback.html.
What's not free is marked commercial or shareware.
This site says, "Yep DVD software
turns your cdrom player into a dvdrom through the magic of software code."
It recommends ebay.com as the best place to find Free Dvd