if you have Exchange server, the versions don't really matter (although its
best if they have no older than 2003) - as long as they have the correct
permissions they can see your calendar. They need to open your calendar
using the File, open, other users folder menu.

--
Diane Poremsky [MVP - Outlook]
Outlook Tips: http://www.outlook-tips.net/
Outlook & Exchange Solutions Center: http://www.slipstick.com

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"Sam" wrote in message
...
I outlook 2007 and have exchange and wants to share calender with
co-workers,
but some have older versions. Is there a way to share my calender without
having to download a 3rd party software?
If not, what should I download/purchase?