plugins

Instructions for Java, Flash, Shockwave, and many more at
http://plugindoc.mozdev.org/
Also, for those not following the weblogs liked from
Mozillazine, you should. Like Linux, Mozilla is proving
fertile ground for a million and more flowers...
http://lxr.mozilla.org/mozilla/source/browser/

Here's another site for automatic flash and java install for Mozilla (saw it on the slashdot discussions -try it at your own risk)
http://mazinger.technisys.com.ar/pruebas-nick/mozilla/