Firefox on Dapper/AMD64

Mon Sep 3 20:10:36 UTC 2007

Curretly I am running Dapper/AMD64 desktop and the installed Firefox is 
version 1.5.0.6.

On my laptop with Ubuntu(32) Feisty, Firefox is 2.0.0.6.

The later will handle XML whereas the former will not.

I did an apt-get upgrade/update on the former and nothing happened to Firefox 
I assume that more drastic operations are needed.

Is Firefox available for an AMD64 system?

Lastly, what is the easiest/practical procedure to upgrade the Dapper desktop 
to Feisty?

Many thanks for comments.
-- 
The whole religious complexion of the modern world is due
to the absence from Jerusalem of a lunatic asylum.
-- Havelock Ellis (1859-1939)  British psychologist