Minor problem of my part when reading email while typing especially
when the two products' version numbers are identical. :-)

Two steps above need to be changed by replacing "thunderbird" with
"firefox" per:

: Copy the firefox-2.0.0.18.tar.gz file to /usr/local/mozilla
:
: Unpack the tar file per:
:
: cd /usr/local/mozilla
: zcat firefox-2.0.0.18.tar.gz | tar xvof -