You can see all users free busy on the scheduling tab.
You can use file, open, other users calendar to view a full calendar.
MS released a group calendar utility - a link to it is at
http://www.slipstick.com/calendar/scheduleall.htm, where you'll also find
other options.

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Diane Poremsky [MVP - Outlook]
Author, Teach Yourself Outlook 2003 in 24 Hours
Coauthor, OneNote 2003 for Windows (Visual QuickStart Guide)
Author, Google and Other Search Engines (Visual QuickStart Guide)
Outlook Tips: http://www.outlook-tips.net/
Outlook & Exchange Solutions Center: http://www.slipstick.com
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> We have exchange and Outlook 2000 and want to be able to share all users
> calendars so that we can see who is busy / available. Is there a quick
> way
> of doing this?
The 'OpusFlow GroupCalendar for Outlook' might be just what you need.
http://www.OutlookGroupCalendar.com
> We have exchange and Outlook 2000 and want to be able to share all users
> calendars so that we can see who is busy / available. Is there a quick way
> of doing this?