Outlook 2007 (which I will assume is what you would buy) has various ways
that teams can see each other's Calendars, one is the Group Schedules,
another is laying calendars over each other. These methods both use live
data from each user's Calendar.

You can also make Public Folder Calendars (if you use Exchange server) and
have static Calendars there. By static I mean they are a bit like a wall
planner - they do not automatically take data from anywhere - people key it
in for a team of people to be able to access it.

Read up on Outlook Calendars on the Microsoft web site - I am sure they will
have a lot of information and often case studies too.

Here's how to post a good question:
http://66.39.69.143/goodpost.htm
http://support.microsoft.com/kb/555375

Regards

Judy Gleeson
MVP Outlook
Trainer and Consultant   www.pragmatix.com.au

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