Though it is a server, root logins are not allowed in graphical interface. If it is a server and you an administrator, you will need to perform all the admin tasks through terminal only. This is a security thing that debian and some other distros like Ubuntu keep upto to secure your system.
Also, if it is a server why do want to install kde on it and use resources that you might use otherwise for what server is put.
Last edited by linuxlover.chaitanya; 12-22-2008 at 03:19 AM.