GTK+ Theme preferences changing after restart

Hi. I'm currently using SuSE 9.2 along with Kde 3.4. Back when I had Kde 3.3.2 I chose a gtk theme using gnome-control-center and that was set until the next restart. Now that I've updated to Kde 3.4, the theme stays the same after restart except for the fonts. I have to go to gnome-control-center again in order to apply the settings I want. Is there any way to automate this? Any clues regarding this subject? Best Regards, Mário