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I used the script shown above and it did work for me. I am writing this reply from within my Gnome remastered Knoppix 3.8. One thing I would like to mention that I used Kanotix CD to make the compressed file, knoppix CD did not work and don't know why. However, I still have a problem. X does start and shows "Linux In use" picture but Gnome takes several minutes to startup. It shows metacity splash screen and hangs for several minuts but X did start.

By the way, I downloaded Parix and found it full of bugs and unstable. Moreover, its developer made several changes to prevent remastring it. I was not able to start X as user in chrooted environment because creating password for user was not allowed.