how to sync ical with ROGERS/yahoo calendars?

[Rachel]

Syncing with Mac iCal couldn't be easier or more straight forward...

So why, when I create and account, select 'Yahoo', enter my username and password (correctly) using a rogers.com account does iCal com back with "Can't find account on the server.

Same is happening with Cal/Dav "Server is unsecured" error message.

I can log in to Yahoo and go to my calendar without difficulty.

Thanks, Rachel.