Copy one calendar to another

[Sseguin]

I have a calendar setup on my iphone with Yahoo. I would like to move all my calendar information to Gmail. Would who I be able to move the calendar data from Yahoo to gmail?

 

[-aggie-]

Sync Yahoo Calendar to iCal. Then sync iCal to Google Calendar.

 

[Sseguin]

Sync Yahoo Calendar to iCal. Then sync iCal to Google Calendar.

Any software for windows? Any way of transfering from one calendar to another with Windows 7?