when receiving calendar invites in my Entourage 2004, doesn't give me option to 'accept or reject'

[john crabb]

most of my colleagues have win xp or 2000. is there a setting i have
to change in my entourage 2004 to enable me to have the
'accept/decline' show up in the top bar of the invitation so it can
then be populated to my calendar immediately upon acceptance?