From Fedora Project Wiki
Step by step tutorial for installing KDE and removing Gnome:
- Open up Terminal .
- Log in as
root
viasu
- Enter
yum install @kde-desktop system-switch-displaymanager kdm
This will install the required packages.
- Now enter
system-switch-displaymanager kdm
This will make the system use KDM as the default Display Manager
- Reboot your machine.
- Choose KDE as session and Log In.
- If you plan to remove GNOME, continue; otherwise you're done now.
- Remove Gnome using
yum remove @gnome-desktop
.
- You can now use KDE as the default Desktop Environment.