How to Sync iCal on Two Macs (21 Steps)

From the Apple menu, select 'System Preferences' and click on the 'MobileMe' icon. If you are running an old version of OSX, the icon will be '.Mac' but it will take you to the MobileMe site at Apple.
Click on the 'Sync' tab.
Check the 'Synchronize with MobileMe' box and select 'Automatically' from the drop-down menu to the right.
To sync iCal, select 'Calendars.'
Log all the computers to be synchronized into your MobleMe account.
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