On CENTOS I went to System - Preferences and then Remote Desktop. There I checked "Allow other users to view" and "Allow other users to control". The same dialog box said "Users can view your desktop using....." vncviewer name.server:0. Using UltraVNC from a Windows computer I type that but I get connection refused.
I also tried to edit /.vnc/xstartup The directory is there but not the file.
I want to create a desktop with a specific resolution and it to be persistent or permanent even if I restart the server.