How to embed a keyboard in unlock dialog

[Luca Ferretti <elle uca libero it>]

Could someone suggest a working value
for /apps/gnome-screensaver/embedded_keyboard_command GConf key?

BTW it could be an useful info to add in
http://live.gnome.org/GnomeScreensaver/FrequentlyAskedQuestions (OK,
it's not so frequently asked, but it's an useful info that we could add
to accessibility guide).

Cheers, Luca.