Currently Being ModeratedApr 18, 2011 5:17 PM (in response to chrisg)
do you mean "share" calendars so that each other gets a view of the other's cal?
yes, select the calendar you want to share, go to calendar at the top, chose share, etc. (you can determine who see it). the other mac user would then do the same, sending you the invitation to "share" to his cal.