You should check out http://customsoftwareconsult.com/extensions/cleo/cleo.html and http://customsoftwareconsult.com/extensions/febe/febe.html to backup your current plugins then use cleo to combine them into 1 file. Then I use Firefox2.exe -ms -install-global-extension "whatevernamededit.xpi" Atleast this seems to work for extensions,