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firefox 4 - how to install global extensions for all users

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leaving extensions ( xpi )in the "<path to firefox>\extensions" folder no longer works with version 4 it seems. How can i install extensions globally for all users. thanks

leaving extensions ( xpi )in the "<path to firefox>\extensions" folder no longer works with version 4 it seems. How can i install extensions globally for all users. thanks

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Drop the XPI's into the \extensions\ folder in Firefox program files.