Strange, the text in my previous post is not showing. Maybe because was a cut&paste from word?
Anyway, I believe I followed the project's instruction correctly.
I had to put webdavconfig.nsf in the root of my server not in the development directory to have it working.
But now when I go to scadom3.schaer.com/webdav
I'm asked my credential for autentication and then I land on the expected page. I can then navigate to tesdb and to a document inside it.
THEN when I click on the “Direct Open” link of an attachment my autentication page is opened in word instead of the desired document. I tested it in Chrome, Firefox and Internet Explorer.
For example this:

lead to this:
Does anyone know what to do to receive the document instead of the login page?
Thank you,
Angelo