Dear Kev,
are you using Exchange Server or a local installation?
How to share a calendar with Exchange:
http://office.microsoft.com/en-us/outlook/HA101743591033.aspx
http://office.microsoft.com/en-us/outlook/HP011111491033.aspx
How to share Outlook without Exchange:
http://www.publicshareware.com/public-share-outlook-description.html
Other Outlook sharing solutions:
http://www.slipstick.com/outlook/share.htm
Article about "sharing your Outlook information (by Eric Legault)"
http://office.microsoft.com/en-us/outlook/HA011477571033.aspx
Office Marketplace Outlook messaging tools:
http://office.microsoft.com/en-us/marketplace/CE010719621033.aspx
Maybe it helps.
--
Oliver Vukovics
Share your Outlook PST files without Exchange: Public ShareFolder
Synchronisation for Outlook and Exchange: Public SyncTool
http://www.publicshareware.com
> We recently upgraded to Windows Vista and Office 2007 and for the life of
> us
> can not figure out how to share the calenders... I tried to share by going
> to: Calender properties however, it's all greyed out.