How to setup w3m-el as a default browser on GNU system?

[Paul Chany]

Hi,

I'm using Debian GNU/Linux Squeeze operating system.

This is an old PC Box with AMD-K6(tm) 3D processor and 60 MB RAM.

I'm using GNU Emacs 23.1.1 (i486-pc-linux-gnu, GTK+ Version 2.18.2) of
2009-11-02 on raven, modified by Debian.

This system is very slow so I want to use Emacs-w3m as a system default
browser. Is this possible and if yes, how can I setup this?

I need this setup because when in org-mode and want follow a link to a
file://path/some.html then an xterm being started and on it w3m as a
default browser. I try to setup Emacs and org-mode to open this file in
Emacs buffer in w3m-el but without any success. What am I missing here?

Any advices will be appreciated!

-- 
Regards,
Paul Chany
You can freely correct my English.
http://csanyi-pal.info