[CalendarServer-users] how to create a new calendar from a client app

Hi, I've just installed calendar server on OS X 10.5 (not server). I'm able to visit http://myip:8008 and subscribe any of those calendars with ical, but I've tried to create a calendar in ical and than publish it to http://myip:8008/admin and I did not succeed. Ical is giving me an error: "The server responded with HTTP/1.1 409 Conflict" The question is: How do set up a server where each user are able to write to the server their own calendars? Cheers, José