Server 2003 with IIS 6.0 i was able to make a webdav site, and open and save documents on the server without any problem. This is not the case anymore on windows server 2008 and IIS 7.0
Webdav authoring rule is downloaded and installed.
When i browse to http://mysite/webdav/myfile.doc
The file opens as Read-only, and is not possible to save back on server.
I have a specified user set up to use webdav.