SlackRobots Login Screen by Yusuf 75
To install this login screen, place this folder somewhere handy (as an example,
create /home/username/themes and place it there)
Now edit kdmrc as root and edit the theme definition to read:
(You can found kdmrc in %KDEDIR%/share/config/kdm )
(replace /home/username/themes/SlackRobots with the folder you used)
copy this folder to %KDEDIR%/share/apps/kdm/themes
Save it and logout.