http://blogs.iis.net/sakyad/archive/2008/11/19/webdav-on-iis-6-0-troubleshooting.aspxWeb Distributed Authoring and Versioning (WebDAV) extends the HTTP/1.1 protocol to allow clients to publish, lock, and manage resources on the Web. Integrated into IIS, WebDAV allows clients to do the following: • Manipulate resources in a WebDAVenCommunityServer 2007 SP1 (Build: 20510.895)