help!, ListBox do not display some of my characters...

[atilla selem]

hi..
i have a problem with my listbox,
it doesn't allow me to display turkish characters like "ü, ý, etc,.."
my editbox displays whatever i type in it but my listbox not!...
although i've changed listbox font settings (script=turkish, or font=Arial TR)
nothing changed...
All my religional settings works fine. i have no problem with displaying except from my listbox.
What should i do?
any help will be appreciated...

Thanks ,
Atilla Selem