My company uses Microsoft Exhange, and schedules meetings via webex. I work from home and use iCal, Google Calendar. To sync, an executive assistant sent me this link

But when I try opening it in iCal or subscribing to it via iCal (or even Entourage for that matter), there is an error.

Does iCal sync with webex calendar/Microsoft exchange? And if so, can anyone provide some help?

Thank you!