Rated 5 out of 5 stars

by mco1003 on Feb. 4, 2009 · permalink

The steps are:
- download the xpi file
- Launch zip
- Click open and locate file
- open the install.rdf
- locate the line which says "maxversion 1.0" (or other versions and change it to "maxversion 3.0"
- save the changes in the install.rdf zip file
- close the zip program
- install this edited file as an add-on in Thunderbird.