sharing data file

[n]

I personally use two desktops at work, each in two different rooms. The
desktops are on a peer to peer network with no mail server or MS Exchange
Server etc. I would like to use Outlook on both desktops to manage my mail,
calendar etc. Is there a way to have the two Outlooks share the same data
file without using Exchange Server (remote mail, public folders etc),
purchasing other software, or importing/exporting folders between machines?
This way the folders on each Outlook will essentially be identical and I can
manage my mail from whichever machine I happen to be at.

Thanks