newbie: help needed with playing dvd's

[Robert Ashworth]

I have just (fortnight ago) converted from microsoft to ubuntu and
therefore don't really know what I'm up to yet but, I have a problem
that i need to sort out pertaining to dvd playing.

I have followed the instructions about playing dvd's by installing
gxine, libdvdnav4,etc and typing commands into the terminal etc but when
I try to play anything gxine engine fails to start and I get these
messages in the log output:-

08:25:41 AM: xine: found demuxer plugin: image demux plugin
08:25:41 AM: xine: found input plugin  : file input plugin
08:25:40 AM: xine: cannot find input plugin for MRL [dvd:/]
08:25:40 AM: xine: input plugin cannot open MRL [dvd:/]
08:25:40 AM: xine: found input plugin  : DVD Navigator

Please tell me what I have done wrong I need to learn

Bob