VNC configuration in RHEL 4 and RHEL 5

First enable service "vncserver" on Server
#chkconfig vncserver on

Restart the service
#service vncserver start

#vncserver
New ':1 (root)' desktop is Server_Ip_Address:1

Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/Server_Ip_Address:3.log

#vncpasswd
Password:
Verify:

# vim /root/.vnc/xstartup
The entry should look like as follows,

#!/bin/sh

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

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
#xsetroot -solid grey
#vncconfig -iconic &
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
twm &


Now u can view through vnc viewer using Server_Ip_Address:1