Thunderbird Open/Save menues under KDE


I’am using Thunderbird under KDE 4.7. The open/save menues are gnome menues with kde style. When changing folders or select a file, you have to use double-klick instead of one-click :.
I tried to switch Thunderbird to one-click using gconf-editor or by changing to one-click in Nautilus but this has now influence on Thunderbird.

Does somebody know how to change the Thunderbird menues to one-click?



P.S.: There is one new scheme making Thunderbird looking a little bit more like a KDE App (using the oxygen icons):