Yes and no...you can point both users to the same .PST file but they cannot
both have it open at the same time, at least not without a 3rd party tool. http://www.slipstick.com/outlook/share.htm lists at least one such tool.
--
Jocelyn Fiorello
MVP - Outlook
*** Messages sent to my e-mail address will NOT be answered -- please
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You can buy spinning rims for your car, but Ford doesn't make them.
Microsoft's solution for shared calendars/contacts/mail is Exchange
server....usually overkill for small offices/home users, but they do make
it.