How to modify the font of an application ?

["Zsolt Koppany" <zsolt.koppany@intland.com>]

Hi,

how do I have to modify the file .gtkrc-2.0 (see below) to modify the font
of the application "eclipse" but not all other applications?

style "eclipse"
{
    font_name = "Sans 9"
}
class "GtkWidget" style "eclipse"