Does anyone have experience publishing Windows Calendar with the specific site: iCal Exchange.com? I've tried and the calendar is not allowing me to publish. It should be asking for a username and password, but it doesn't.

This is the error I receive after I try publishing:
"There was an error publishing your calendar Calendar 'NAME OF CALENDAR' was not published. An error occurred during the publishing process:the network path was not found."

The path was cut and pasted as supplied by iCal Exchange. Anyone have any ideas as to what I might be doing wrong?