http://www.videohelp.com/
full of hacks for all dvd players and has a forum you could try searching for answers - your best bet.
Failing that, I suggest getting a Xbox 1, run softmod on it (chips the xbox without actually using a physical chip) and then upload xbox media centre onto it!
Then you have:
1. A multi region DVD player (with component out and HD upscale if you get the HD cable)
2. A multiformat player. i.e. it can play anything your PC can practically, including DivX, Xvid, WMV, mp3... loads!
3. Its can connect to a network so you can use it to access all your Mp3's, videos etc from a networked PC
4. Plays Xbox games (backups and originals), old skool console emulators
BTW, a 2nd hand xbox costs as much as most of the cheapest DVD players out there yet is much better quality that some of the more expensive ones