events, calendars, alarms and preferences you already have, run Portable iCal on your system and click  Copy when prompt. Warning: Data and passwords stored with Keychain are not portable! Copy This will copy your  ~/Library/Application Support/iCal folder and  ~/Library/Preferences/com.apple.iCal.plist , com.apple.iCal.AlarmScheduler.plist and com.apple.iCal.helper.plist files to Portable iCal. Preference file and folder