[CentOS] Confused about Java browser plugin for Firefox

Hi,

I'd like to install a working Java Plugin for Firefox, and I wonder how to go 
about it. There's some documentation available online, but one quickly gets 
the feeling it's quite a mess. I also admit being a contributor to the mess, 
since the Linux book I published in June 2009 gives a detailed - and now 
obsolete - description about installing JRE :

http://www.microlinux.fr/linux_aux_petits_oignons/chapitre_8/01.php#java

Any advice on how to go about that without jumping through burning loops? A 
pointer to some concise documentation or, even better, a short and working 
step-by-step HOWTO? 

Cheers,

Niki Kovacs
-- 
http://www.kikinovak.net