IIS Webdav user home directories

I'm using Webdav on IIS. I'd like to have users access their home directories via Webdav.

I created a Virtual Directory \\server\users$\

My users need to access their "Document" folder. They don't have permissions to folders of other users.
They need to get to:  \\server\users$\%USER%\Documents\

Here's where they land:  \\server\users$\

How can I create some kind of shortcut / redirection in the webdav root which lets my users enter their "documents" folder right away? (Without having to go through users\%USER%\ )