This correction applies to both Office SharePoint Server 2007 and Search Server 2008.

1.In step 2, the correct registry key to set the CLSID of the  filter is :

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office
 Server\12.0\Search\Setup\ContentIndexCommon\Filters\Extension\

2. In step 7, the CLSID for OneNote filter is incorrect. The correct value is:

.One = {B8D12492-CE0F-40AD-83EA-099A03D493F1}

The KB will be revised shortly to reflect these changes.