Hi Honoluluoffice,
>I know pst files are not able to be shared,
PST files are able to share. Microsoft do not support this solution. You
will find this Thrid Party Tools on this sites:
http://www.mapistore.com/Outlook/Groupware
http://www.slipstick.com/outlook/share.htm
>but are
> there alternatives to pst to allow for this type of sharing?
a very simple idea to share emails is, to create normal folders on a network
drive and to move the incoming emails from the PST files into this shared
network folders. The emails were saved as ".msg" files but you have to move
all the incoming emails manually from the PST file to the network folders.

Signature
Oliver Vukovics
Share Outlook PST files without Exchange: Public ShareFolder
Notebook Synchronisation for Outlook: Public SyncTool
http://www.publicshareware.com
> We are an office of about 80 people with everyone on Outlook and an
> Exchange
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> there alternatives to pst to allow for this type of sharing?
> Thanks.
> environment where each project gets an e-mail folder that multiple users can
> access and file e-mails.
Whats wrong with Exchange public folders? They can even have email
addresses.
Wolfram