With the CD, Knoppix is booted using files in a directory named /boot/isolinux. The boot commands and their options are specified in the file named isolinux.cfg. Your remastering will have a copy of this file. You need to change it. Something like:
Code:
sed -e 's/lang=en/lang=es/' -i isolinux.cfg
should do the trick. That will pick up whatever KK thinks is good for Spain. Where are you ? I know there are a great many people who might want a Spanish keyboard layout but don't live in Spain (or California ).

Knoppix cheat codes over write certain files. It is a complex mechanism. I tried to describe how to customise this with a) cheat codes and b) without cheat codes in a general fashion but that, apparently, is too confusing. Seems people don't want to know, they just want answer.