Very Computer

For certain users, I want an app to run instead of the KDE desktop.  The app
is the Citrix ICA client in full screen mode.  I can run it from a shell
command with the following command:  X | /usr/lib/ICAClient/wfica "Console"
This starts X and runs the full screen remote NT desktop.  It works the way
I want to but doesn't clean up when I quit the Citrix client.

How can I set up KDE so some users get the normal desktop and others get the
ICA full screen (sans window manager) client?  What would be great is
getting the KDM to present another logon screen when quitting the ICA client
instead of the blank screen I get when I run it with the command line
mentioned above.

Thanks,

Craig