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Set a User Image for KDM

Copy the image as {loginname}.xpm to /usr/local/kde/share/apps/kdm/pics/users/

EG:   convert /home/anthony/icons/local/face_gifs/anthonySmall.gif \
               /usr/local/kde/share/apps/kdm/pics/users/anthony.xpm

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Set the Logo for this machine on KDM login window

In /opt/kde/share/config/kdmrc replace/add the line
   LogoPixmap=/home/anthony/icons/local/KDM_kobold.xpm

Also set the title with
   GreetString="Kobold - The little monster down under"

Under SuSE that last can be done via YaST config variable
    KDM_GREETSTRING="Kobold - The little monster down under"
But be sure to remove the check sum for this file, or it may not update
   rm /var/adm/SuSEconfig/md5/opt/kde/share/config/kdmrc

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Remote X window access to your linux box
(Note VNC may be a better, more secure solution for this)

First define who is allow to access your machine with X Access...
  If you want to log in from an other computer (Remote X), you can add a IP
  number or hostname that is allowed to use remote X in
  /opt/kde/share/config/kdm/Xaccess

Now turn on xdmcp protocol in in kdm config...
    vi /opt/kde/share/config/kdmrc
      [Xdmcp]
      Enable=true
      KeyFile=/opt/kde/share/config/kdm/xdm-keys
      Willing=su nobody -c /opt/kde/share/config/kdm/Xwilling
      Xaccess=/opt/kde/share/config/kdm/Xaccess

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