Public Sharefolder works in a domain (NT 4.0 - 2003), on terminal
Server (Windows and citrics) and in workgroups with NT based systems.
It works between 2 users and untill now 600 users, with our without a
domain, with or without a server, doesn´t matter. You can make your
workstation or laptop to a "server" so you can share your Outlook PST
"live".