Such plugins are usually found via a registry scan. *https://developer.mozilla.org/en/Adding_Extensions_using_the_Windows_Registry You can set the plugin.expose_full_path pref to true on the about:config page to see the full path of enabled plugins on the about:plugins page. *http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins *http://kb.mozillazine.org/about:plugins *http://kb.mozillazine.org/about:config It is best not to leave that pref set to true as it exposes that full path to web servers via the navigator.plugins object, so reset that pref to false after you are done with the about:plugins page. See "Manually uninstalling a plugin": *https://support.mozilla.org/kb/Troubleshooting+plugins

Can you put any of that in plain English that someone who is not really computer literate can understand? I have no idea in Hades how to follow any of the steps in your links.