I installed Mac OSX 10.6 and have the old 10.5 on a seperate HDD. Can I now simply copy the old iCal-Data into the new iCal-installation?
I tried ~/Libarary/Application Support/ but there is no Folder called iCal?
Try this.
1) Boot into 10.6 and mount the 10.5 HD
2) Open migration assistant
3) Choose to migrate user accounts
4) Tell it to merge/replace the account you want with your old data
That will migrate iCal and all your old settings.