Part of my switch from Windows to OSX involved figuring out how to get my Outlook Calendar data from Windows/Outlook to MacOSX/iCal. I was really dreading having to manually reenter the whole thing.
Thanks to Norm Jones and Mike Baas who wrote the Outlook Calendar to iCal Macros the migration was a snap. I installed the macros in Outlook, exported to an iCal file, imported it into iCal and I was off and running. Everything came over including recurring meetings. The only thing that didn’t transfer was whether a reminder is supposed to go off before a meeting. In any case, it saved me a lot of time, thanks Norm and Mike!
Here’s the sourceforge page for the Outlook to iCal converter!