Try using "GSpot Codec Information Appliance [version 2.1]" to identify
the Codec, URL:
http://www.headbands.com/gspot/.
Then try to download the codec.
Or you can try your luck with a Codec Pack like Nimo or K-Lite:
http://home.hccnet.nl/h.edskes/mirror.htm for K-lite.
http://nimo.titanesk.com/ for Nimo.
*Don't use nimo unless K-lite failes.
**Read instructions carefully and customize your setup (you allready have
divx, DON'T YOU ???).
If this failes, try downloading Newest adapter drivers and check overlay
settings.