I have changed jobs recently and was given the task of building a network monitoring system.
Check out http://fannagioscd.sourceforge.net/
It is a complete setup that all you have to do is download the ISO, burn the DVD and start the installation.
In the installation process it installs Nagios with supporting packages of Centreon and NAGVIS.
Check it out and I will be updating these posts as I get more done in the project.
If you would like to add a article to this site please contact me and I will be willing to work with you.