Quick iCal Tip: Set Your Default Calendar

I have been going crazy trying to figure out why all my incoming meeting.ics files were going to my QuickBooks calendar (I have several calendars) and not another one. There had to be a setting somewhere, right? I could not find it, but I did discover how to inadvertently set it: drag the calendar you want to use as the default to the top (same goes with Mail.app with setting the default account).