For Javi (and anyone else that doesn't care much for the latest Yahoo upgrade or update):
In Yahoo calendar select '
options' from the right side, go to '
share calendar' then to '
other ways to share'. Click the link under '
ICS Link' and save it. In Outlook go to '
File' then to '
Import and Export' then '
Import from ICalendar'. It just sounds a bit messy but you'll get the job done!