If your server is a Microsoft Internet Information
Server (IIS), select File. (Virtual works with IIS only in certain
specific circumstances.)
Note: Unfortunately, IIS won’t allow
you to include a file in a folder above the current folder in the
folder hierarchy, unless special software has been installed on
the server. If you need to include a file from a folder higher in
the folder hierarchy on an IIS server, ask your system administrator
if the necessary software is installed.