Where do I pass arguments to teh Xserver?

[morten]

Hi

I've been trying to track down where I pass arguments to the Xserver.

I used to use OpenBSD, with xdm, and there I could tell the Xserver to
not listen on tcp ( -nolisten tcp ) in /var/X11/xdm/Xserver.

How do I do that in Debian?

I use Potato with all updates, Ximian GNOME and gdm for login.

Thanks!
               Morten