Bing found the following results
FFDshow and How to Enable/Disable It - David esp
Ffdshow FAQ | AVS Forum
How to disable ffdshow - egosoft.com
Is there a way to not use ffdshow ? - Acoustica User Forums
FFdshow to output TrueHD/DTS-MA/DD+ | AVForums
"ffdshow compatibility manager" popup when starting MC.
FFDShow settings for divx/xvid | AVS Forum
FAQ - Configuration - Codec Guide
ffdshow - Wikipedia
ffdshow Installation and Configuration - AfterDawn: Guides