Screenshot 1 (102 KB): shows the print IO slave in action while browsing the print system, and viewing a class/printer. The data presentation is just a try, I can't write good HTML. It's just a matter of template. This is only intended to demonstrates the code.
Screenshot 2 (24 KB): shows the print management part integrated in Konqueror. By adding a "virtual folder" to the services section of the Konqy sidebar, you get a nice integrated way to browse and manage your print system.

Print system DB: lists the print system used along with some useful informations by Linux distribution