Hi there and welcome
Can you tell me with which service your calendar is with? eg: Gmail, Hotmail ect?
ok... iCal is a internet based calendar, it does not describe the service.
Whats the part of your email address after the @ that the calendar is tied to?
so your saying the part after the @ symbol of the email address is @yahoo.com ?
ok... sorry to ask the questions I did, but I needed to know to fix your problem...