This has been asked in countless threads... but..

To play OGM this is what i do

first I install these files

1. FFdshow: http://prdownloads.sourceforge.net/f...3.exe?download (there are other versions, but this is what I use)

2. Vobsub: http://www.filemirrors.com/search.sr...obSub_2.23.exe

3. Ogg Filter: http://www.vorbis.com/files/1.0/tobias/OggDS0995.exe

3. xvid: http://www.stargeek.com/item/36425.html

After I have installed those I open them with Media Player Classic (not windows media player)

Here's the link:
for 2000/XP version: http://prdownloads.sourceforge.net/g...5.zip?download

for 9x/ME version: http://prdownloads.sourceforge.net/g...5.zip?download

And that's it


Some of the codecs and filters probably have newer versions so you might want to download those instead... but the versions I'm giving you should work fine