Switching from Gnome to KDE

Hi list, My friend mistakenly installed SuSE Linux 10.1 with Gnome instead of KDE, after that they hardly installed network, which took a long time. Now he wants to switch to KDE, but without re-installing system(not ot lose that network;)). Is it possible? Any help greatly appreciated. -- Sergey Mkrtchyan, Scinetific Researcher, Department of Molecular Physics, Faculty of Physics, Yerevan State University