OK, I tried to get this to work today.

On my server (which is knoppix-installed as debian):
I editted the /etc/kde3/kdm/Xaccess file to uncomment this line:
any host can get a login window
Then I editted the file /etc/kde3/kdm/kderc and set Enable to true:
[Xdmcp]
Enable=true
Then I issued the command line:
/etc/init.d/kdm start
and in /etc/rc5.d I issued the command line:
ln -s /etc/init.d/kdm /etc/rc5.d/S99kdm
then, one final command line:
chmod a-x /etc/init.d/xsession

On my client (which is a KNOPPIX liveCD or poor man's CD image):
I issused the following command line after a knoppix 2 boot:
X -query 10.10.2.64
(which is the server's ip).

The client booted up to the grey X screen and froze! Now, what did I miss?

If I can get this working with the liveCD, then I'll figure out how to get the clients working this way as hdd installs.

TIA,