aladdinsgenie 0 Newbie Poster

I was going to watch a DVD and when I put it into my Sony DRU-800A DVD Player/Recorder the interactual player wanted to install, so i went ahead and installed it, then i tryed to play the dvd and i got an error message stating "The DVD navigator was not detected. If you don't have one installed, you will need to upgrade your system. Otherwise, try to reinstall your DVD Navigator. " where do I find and how and where do i install the missing navigator? The DVD Player in Windows 2000 was not added to my accessories because of a missing decoder, where can I find a free decoder and where and how do i instal it so I can use that DVD player instead of the InterActual Player?