Gtk themes not working properly (Suse 9)

Hi When I apply a gtk theme using the gnome control center the theme only last for the present session. If I log out and log in again the basic gtk theme is back. This apply to all gtk programs running inside kde (i call the gnome-control-center inside kde). When using gnome the themes are always working. How to tell kde to load the gtk theme on startup? Just as a note, I removed the QtPixmap package which forced gtk programs to use the kde theme. This is a tip to improve the performance of gtk programs inside kde. Thanks Gustavo