I got a PHP.net Search Plugin working in Firebird. Simply extract the archive (http://www.redbrick.dcu.ie/~proche/index/MozPlugins/php.zip) to your MozillaFirebird/searchplugins directory and restart. You will then have the choice to search PHP.net as well as Google and DMOZ. UPDATE: I just wrote an Acronym Finder Plugin , (http://www.redbrick.dcu.ie/~proche/index/MozPlugins/af.zip) and also a TEOMA search Plugin (http://www.redbrick.dcu.ie/~proche/index/MozPlugins/teoma.zip).  Enjoy 🙂