wich settings for using firefox with mutt ?

[mess-mate <mess-mate@xxxxxxxxxx>]

I've installed firefox in my $HOME dir.
But can(t use it with mutt:
my mailcap file looks like :
text/html; /home/mes-mate/firefox/firefox '%s'; description=HTML
Text; nametemplate=%s.html; test=test "$DISPLAY" != ""

and

text/html; /home/mess-mate/firefox/firefox '%s'; description=HTML Text;
test=test -n "$DISPLAY";  nametemplate=%s.html

I've setted also firefox as the default browser in my 'alternatives'
and 'env'.

What's wrong with it ?
best regards

mess-mate                               
-- 

Q:      How many WASPs does it take to change a light bulb?
A:      One.