How do I change from gdm to kdm (not gnome to kde)

** This message is intended for the addressee named and may contain privileged information or confidential information or both. If you are not the intended recipient please delete it and notify the sender.

How do I change display manager from gdm to kdm?

Not Gnome to KDE please Kind Regards ** This message is intended for the addressee named and may contain privileged information or confidential information or both. If you are not the intended recipient please delete it and