I have tried a lot of tools but there is none better then UnetBootin http://unetbootin.sourceforge.net/It is multiplataform, windows, max, linux.
How to use the cdrom RedHat .iso
I tested using Vmware ESX and RedHat 5.7
1 . Mount or insert the RedHat CD
If you are new to the monitoring world and new to Linux, Nagios etc…
Do not lose the chance to try out this product, its amazing easy to install.
Just download the .iso boot a Virtual Machine poiting the CD to the .iso and the instalation is really really
easy, you could be up and running in just few minutes!
All credit goes to FAN team.