Oracle Database Discussions

I've been trying all week to install Oracle 11g onto an RHEL 5.2 Server. Please find below my terminal session:

[oracle@cscdserver11 ~]$ DISPLAY=192.168.10.11:0.0
[oracle@cscdserver11 ~]$ echo $SHELL
/bin/bash
[oracle@cscdserver11 ~]$ echo $DISPLAY
192.168.10.11:0.0
[oracle@cscdserver11 ~]$ export DISPLAY
[oracle@cscdserver11 ~]$ xhost +
xhost: unable to open display "192.168.10.11:0.0"
[oracle@cscdserver11 ~]$ ./database/runInstaller -ignoreSysPrereqs
Starting Oracle Universal Installer...

Checking Temp space: must be greater than 120 MB. Actual 4345401 MB Passed
Checking swap space: must be greater than 150 MB. Actual 18047 MB Passed
Checking monitor: must be configured to display at least 256 colors
>>> Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set. Failed <<<<
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2009-04-06_08-11-38PM. Please wait ...[oracle@cscdserver11 ~]$ Oracle Universal Installer, Version 11.1.0.6.0 Production
Copyright (C) 1999, 2007, Oracle. All rights reserved.

Can't connect to X11 window server using '192.168.10.11:0.0' as the value of the DISPLAY variable.
192.168.10.11:0.0
192.168.10.11:0.0
OUI-10025:Unable to start an interactive install session because of the following error:Can't connect to X11 window server using '192.168.10.11:0.0' as the value of the DISPLAY variable. The DISPLAY environment variable should be set to <hostname or IP address>:<screen>, where the <screen> is usually '0.0'.
OUI-10026:Depending on the Unix Shell, you can use one of the following commands as examples to set the DISPLAY environment variable:
- For csh: % setenv DISPLAY 192.168.1.128:0.0
- For sh, ksh and bash: $ DISPLAY=192.168.1.128:0.0; export DISPLAY
Use the following command to see what shell is being used:
echo $SHELL
Use the following command to view the current DISPLAY environment variable setting:
echo $DISPLAY
- Make sure that client users are authorized to connect to the X Server.
OUI-10027:To enable client users to access the X Server, open an xterm, dtterm or xconsole as the user that started the session and type the following command:
% xhost +
To test that the DISPLAY environment variable is set correctly, run a X11 based program that comes with the native operating system such as 'xclock':
% <full path to xclock... see below>
If you are not able to run xclock successfully, please refer to your PC-X Server or OS vendor for further assistance.
Typical path for 'xclock': '/usr/X11R6/bin/xclock'

/usr/bin/xclock
Error: Can't open display: 192.168.10.11:0.0
[oracle@cscdserver11 ~]$

I'm greatly disappointed that something so simple is so hard. What am I missing here?
It seems to that "xhost +" does not work for me. I continue to get the following message:

[root@cscdserver11 ~]# xhost +
xhost: unable to open display "192.168.10.11:0.0"

I get the same message if I'm sign-on as an oracle user.

Please help

Thanks