SLES10 - VNC Remote problem

Something went wrong on my SLES10-SP1 vnc connection.
I can only get a basic grey VNC Connection when I connect to the server using vncviewer.

Note : uninstall all vnc* first if neccessary

1. Login via SSH to the server
2. Start Yast. Choose Network Services - Remote Administration - [x] Allow Remote Administration.
3. Choose to install tightvnc etc when asked.
4. Quit Yast and run # rcxdm restart

Then run vncviewer to the server's ip eg; 192.168.0.156:1