I always wondered what the differences were between creating virtual directory using
the IIS and through Windows Explorer (Web Sharing).
I found out today after spending over an hour trying to figure out why I was getting
this error when calling my web service from a windows client: WebException: The
request failed with HTTP status 401: Unauthorized
The reason is that when you create a Virtual Directory through IIS the default permission
for the directory is Anonymous but when using Windows Explorer the default permission
is set to Integrated Window Authentication.