With multiscreen support a user can launch his connection to any screen he chooses. However, when running an ssh session it is important to tunnel the $DISPLAY so that your data is not sent over unencrypted.
In order to send your $DISPLAY to a specific screen, set your $DISPLAY to the tunnel when launching a new client.
xterm -display localhost:10.1 — this sends the DISPLAY to localhost:10.1 which is screen #1 through the tunnel
To do this automatically in one line, send your DISPLAY to the following script
`echo $DISPLAY | sed ‘s/\(:.*\)\..*/\1.###/’`
where ### is your Screen number
xterm -display `echo $DISPLAY | sed ‘s/\(:.*\)\..*/\1.4/’`
will send your xterm tunneled to Screen 4