There isn't one that's free. Windows XP does NOT come with aq MPEG2
decoder. Reinstall your DVD viewing software, probably PowerDVD or WinDVD,
whichever came with your PC.

www.gocyberlink.com
www.intervideo.com

Both do have DVD decoders that you can BUY (they are not that expensive)
that will let you view DVDs on your PC. Vista does come with MPEG2 decoding
software, so you could also think about upgrading to Vista if the PC is up
to spec.
--
Cari (MS-MVP) Printing & Imaging
www.coribright.com/windows

"Rafael" <Rafael@discussions.microsoft.com> wrote in message
news:3FE69467-222E-45F4-9A61-6E5E0677EA08@microsoft.com...
>
>
> "byzinski" wrote:
>
>> reinstalled windows xp. upgraded from media player 9 to 11. put in DVD.
>> ERROR
>> message COOD1163 appears. "windows media player cannot play this dvd
>> because
>> there is a problem with digital copy protection between your dvd drive,
>> decoder, and video card. Earlier I had to download a decoder (microsoft
>> charges money). So I downloaded from a website that does not charge money
>> (mpeg-2 decoder). I have a feeling that the decoder I downloaded is the
>> problem. Question is where can I download a video decoder (free) that is
>> compatible with windows xp?
>> --
>> byzinski