Have you tried an iBay that is opened right up? But without a common user defined I'm not sure how it would appear in the Neighbourhood...
BTW you only have to define the common user LAN-wide and make each workstation log on with that communal user, otherwise its pretty transparent. If you didn't want/need LAN security then just automate those workstations' log on with something like TweakUI. By choosing or trying not to go down the normal route you are putting yourself in the roughlands so to speak. Which is OK if you know how to work it but a PITA if you don't;~/
best wishes, Robert