ISO file to boot CD?

I am trying to understand how to take an ISO file and create a boot CD from
it.
I don't understand how Lunix relates to ISO files but Linux is mentioned at
several web sites. I understand TAR files but can anyone understand how this
relates to anything.
Does anyone on the list know of some good discussions sites on this subject
as it relates to Linux and Windlows.

Thanks
Mike Enriquez

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