We currently do not offer a direct link with iCal but support a setup where you sync iCal with your Google calendar and sync Google with Yanomo. To setup your iCal – Google link have a look at: http://www.google.com/support/calendar/bin/answer.py?answer=99358#ical
Once this is done go to your Yanomo calendar page (next to your Dashboard) and open the Calendar Settings on the right of the page. Here you will find a list of your Yanomo calendars, “Google Calendar” and “Twitter” headers. Next to the header there is a [+] symbol. Click this and you will be redirected to Google for the appropriate authentication. Once finished your Google calendars and your iCal calendars will be loaded and visible in Yanomo. You can hide calendars by deselecting the related checkboxes.