Hi I did a knoppix style hard drive install (as opposed to a default Debian install) which boots up directly into knoppix user desktop. I used the knoppix-installer script. In the configuration section of the script there is a section: Name-Options.
Here you fill-out your full name, username, password(twice),root password(twice) and host name. None of which is transfered to the hard drive except for the new root password. Also there is no real login. You go from boot to a knoppix desktop. Lilo is the only way to password protect your linux install. I saw this thread and decided to work on it. Thanks to the people here for puttin me on track. This is how I went about changing some of the system defaults to get a system I am happier with.

Create user accounts
Kstart/System/KUser
Create another user, password,home, ect. As also posted earlier was to give your users the same groups as knoppix to enjoy the same level access you have now and still have some security.

After some searching I found the service: kdm

Open up the SysV-init editor. Add the service: kdm at each level 0 thru 5 in the start columns. I moved them all to the start columns at the top half of the page. They all had a sorting level of less than 20. The sorting level can be accessed thru right click/ properties.
Added service: initd at level 5 start, also a low sorting level. While I was there I also started sysklog and hotplug also init 5.
save/ exit.

Kstart/Settings/Control Center/Log-in Manager/Convenience
Preselect User/Specify(select)/User: knoppix/Focus Password(select). These should be the only ones selected on this tab.
You can probably change the user although I havent tried that yet.
Try right clicking on the desktop and loging out.
You should be at a shiny new login. Now try a reboot. I had to reboot twice to get a login.

Some info on setting the hostname:
http://www.cpqlinux.com/hostname.html

let me know how you make out.

johnb