[CentOS] idea: "hybrid" iso images?

In order to create a bootable CentOS installation USB thumb drive, there are several steps one must follow.  The process often involves using a Windows box, which can be kinda annoying.

The Linux Mint distro has what they call a "Hybrid" iso image.
 (see:   http://community.linuxmint.com/tutorial/view/744 )

This image can be written to a thumb drive and used for installation simply by performing:

# dd /path/to/image.iso of=/dev/sdb
  (where /dev/sdb is the thumb drive device).

This thumb drive can now be booted and used for installation.
The same image.iso file can be written to CD/DVD to create the installation media as well.


Is this a complicated ISO build process?  I'm frequently installing to systems without CD/DVD drives, so this would come in handy.

Thanks!

Regards,
Joseph Spenner

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