Linux remote desktop using VNC

Steps：
1.install vncserver

[root@hostname ~]#yum install vncserver   

2.startup vncserver

[root@hostname ~]# service vncserver start   
Starting VNC server: no displays configured [ OK ]   

3.change environment who user you want to login

[root@hostname ~]#su – root   

4.startup a vncserver instance and assign login password

[root@hostname ~]# vncserver   

You will require a password to access your desktops.   

Password:   
Verify:   

New 'hostname:1 (root)' desktop is hostname:1 http://xx.xx.xx.xx:5801   

Creating default startup script /root/.vnc/xstartup   
Starting applications specified in /root/.vnc/xstartup   
Log file is /root/.vnc/hostname:1.log

5.stop the vncserver instance.

[root@hostname ~]# vncserver -kill :1

6.Modifiy default startup script /root/.vnc/xstartup

# Uncomment the following two lines for normal desktop:
unset SESSION_MANAGER   <= remove the mark
exec /etc/X11/xinit/xinitrc  <= remove the mark

7.Use Vnc Client as like OpenVnc and UltraVnc to connect the server.
Resources:
http://forum.icst.org.tw/phpbb/viewtopic.php?t=11500
http://linux.vbird.org/linux_server/0310telnetssh.php#vnc