I know vere little about the EuroLine 6722M, except from how to get into a hidden menu from where you can make it region free and Macrovision free and a couple of other things (look at the Hacks page for info about this).
For some more information about this player, take a look at http://www.home.no/e6722m/.
If you have any more information about this player, feel free to send it to me and I'll put it up on these pages.