Can't view mpg files!!! Error 80040111

> I have a dvd made with a newer sony dvd recorder (not
> mine). On it are mpg files and jpg's. I can view the
> jpgs but first attemp at viewing movies the message I got
> was that I couldn't view that type of file. So I went to
> tools/options in media player and made sure mpg was
> checked. It was checked but box was gray so I checked
> again. Then tried to play video file and message pop up
> states "ClassFactory cannot supply requested class". The
> link took me to the subject error code and options for
> help. So someone, please help this non-technical user!
> thanks.