According to this page - http://informenter.mozdev.org/faq.htm - the data for that extension is stored in the prefs.js file. I suppose you would have to edit your data in that file or in '''about:config''' manually. ''Backup that file before editing it, just in case you create a problem. That way you would have the original prefs.js to fall back to.'' I agree that the developer probably should have a user interface for editing the data. There's an email address at the bottom of that page so you can drop him a line requesting that feature be added to that extension. But I wouldn't hold my breath waiting for it to happen, it has worked from Firefox 1.0 up through the 9.0 beta version without needing an interface, so I wouldn't expect it to be added after it has been around for like 6 years or so without an editing interface.

informenter.