problem with FC9 login screen

[Gerhard Magnus]

My login screen for Fedora 9 has only suspend, restart and shutdown
buttons, plus the list of users. There's what looks like a panel bar at
the bottom of the screen with nothing in it. I can login normally to the
gnome desktop.

How do I change the session to KDE from the login screen? (I specified
including KDE during the installation.)

Is there a widget or file where I can specify a default user (the one
highlighted on the login screen menu)?

Thanks for the help! --Jerry