2/3/2009 4:55:33 AM
RE:How do we post custimized .ico (favicons) for our site(s)
As you can see, this KB article is for version 3.x - http://devnet.kentico.com/Knowledge-Base/API-and-Internals/Using-different-favicon-images-for-multiple-web-si.aspx.
In the 4.0 version was the document base moved to an assembly. Anyway, the methods there are virtual so you can inherit this class and override the methods.