um sorry for misleading you abit, there actually seems to be no option in the serverside to enable it (most other serversoftware have this.)
But it changes nothing. When connecting with the tightvnc vncviever, remember to either pass the commandline parameter of -Shared. So, a full launch command for the clients would be for eg.
Code:
vncviewer -Shared -ViewOnly -FullColour -SendClipboard=0 -AcceptClipboard=0 -FullScreen -UseLocalCursor=0 example.lan.host.net:1
And you just fire up the server with: vncserver
Make sure you have either an xterm or some other terminal app in your ~/.vnc/xstartup or you wont be able to do much with the vnc server.. (: