Need help installing an "alternative"

[Ron Johnson <ron.l.johnson@cox.net>]

Hi,

I just locally installed upstream firefox, and of course Debian 
Alternatives doesn't know about it, so Iceweasel, which uses 
x-www-browser loads iceape, which I don't want.

"update-alternatives --install" seems to be what I want in order to 
add /usr/local/firefox/firefox to the x-www-browser list, but can't 
get it to work.

# update-alternatives --install x-www-browser firefox \
                                       /usr/local/firefox/firefox 3
update-alternatives: error: alternative link is not absolute as it 
should be: x-www-browser

What am I doing wrong?

TIA

--
"History does not long entrust the care of freedom to the weak
or the timid."  Dwight Eisenhower