Configure VNC

To change password
>vncpasswd

To start the server
>vncserver

To kill
>vncserver -kill

To start vncserver with diff geometry
>vncserver -geometry x
and are the resolution of the machine which runs the vnc client

To modify the configuration of vnc
> cd .vnc

xstartup file in this folder has the startup configuration for vnc

have only these lines uncommented/added
vncconfig -iconic &
/etc/X11/xinit/xinitrc &

and start the vncserver with the required geometry