I'm not sure what you want to change, but I use dpkg-reconfigure console-setup and editing of /etc/default/console-setup
Thanks for your answer but this actually configure how the console present itself. I'd like to choose wether xterm or not is used as default console when X isn't started. -- “One original thought is worth a thousand mindless quotings.” “Le vrai n'est pas plus sûr que le probable.” Diogene Laerce