The following is a nice tutorial on how to create a custom Linux Distribution .
PCPlus has a tutorial on building your own Linux distribution with the customizations you want, derived from Fedora, using the graphical interface called Revisor. “We’re used to thinking of Linux distributions being set in stone. They’re either KDE or Gnome, use a certain kernel and bundle certain applications. But this doesn’t have to be the case. If you find yourself making the same adjustments each time you install a new distribution, it’s worth creating your own customised version. Revisor is a tool that lets you do just this, and in this tutorial, we’ll show you how.”