Creating a Firefox extension to edit "network.automatic-ntlm-auth.trusted-uris"

On the sharepoint site we're developing at work, people are able to log into the site using IE 7, but when prompted 开发者_运维问答for the username and password on firefox 3, it doesn't matter how many times you try to log on, the username/pass window keeps popping up. If you click cancel it denies you access into the site. We've tried to fix the issue for our individual machines by:

1) logging into IE 7, clicking "save password" when logging in.

2) Then going into firefox, typing about:config,

3) Search for URIs

4) Adding ".csom.umn.edu" to the value column for the three results that popup.

This is a long and complicated procedure for our clients, would it be possible to create an extension or add-on that would automate this procedure just by downloading it after the first failure of logging on with firefox?

Thank you!

Try this

http://markmonica.com/2007/11/20/firefox-and-integrated-windows-authentication/