I read the system requirements for the most recent version of MeetingPlace
for Outlook that I could find (v6.0 at http://cisco.com/en/US/docs/voice_ip_comm/meetingplace/6x/requirements/60mpsysreqs.html#wp39723)
and that document explicitly says "compatible with Outlook 2000, 2002, and
2003". No mention at all of Outlook 2007. Shouldn't you check this type of
thing before installing a new version of Outlook?