Great thread on IIS 7, WebDAV 7.5, Shared Hosting Config w/UNC folder location
Here is a good thread about WebDAV, FTP 7.5, Shared configuration.. I try to track gems like this in my UNC tag.
http://forums.iis.net/p/1160381/1915103.aspx
Here is more information on Shared Configuration
http://learn.iis.net/page.aspx/95/managing-shared-configuration/
Cheers,
Steve Schofield
Microsoft MVP - IIS