Changing fonts in the Chat Window

Hello to all,

I want to customize my fonts. In order to do this, I have set in my
~/.gtkrc: 


# ******************************************
style "gtk-default-cp1251" {
       font = "-cronyx-fixed-medium-r-normal--20-200-75-75-c-100-rawin-r"
 }
class "GtkWidget" style "gtk-default-cp1251"
# ******************************************

This changes the fonts for all labels and the text-field, into which I
enter my text. But after sending them, the messages entered appear in
the bigger text-field above in a different fontset, which is not
influenced by the ~/.gtkrc-settings. This is the case for text I to send
and for text I receive. 

I have tried everybuddy, version 0.43, compiled from the source code
and installed from the rpm-package. This makes no difference.

Which resource has to be set in order to set this font as well?

Thanks for help,
Kay