Rated 5 out of 5 stars

Από τον/την anilklella στις Σεπτ. 4, 2008 · μόνιμος σύνδεσμος

As previous user mentioned, if you are not comfortable or do not know how to change install.rdf file, please see the following link -- at the bottom you will find the modified xpi file to install directly.
http://www.geekishblog.com/2008/08/modify-incompatible-firefox-extensions-to-make-them-work-with-firefox-3/