View the Firefox plugins with "about:plugins" in the URL window.

Install Flash 32 bit plugin (there is no 64-bit).
Install nspluginwrapper and run it manually to add the Flash 32-bit plugin.

Situation really sucks for Java browser plugins on 64-bit Linux.
Must install 32-bit Firefox + 32-bit Java independently from rpm system.
nspluginwrapper does not work because Sun's plugin is OJI-confirmant
instead of NP-conformant.

With recent 3.x versions, after installing (at least on Linux), you will
have lots of bugs until you set a Home page, even if you set it to not
use the home page.