If you need Firefox to work with integrated Windows Authentication do this:
- Open Firefox and go to about:config
- In the filter type network.automatic-ntlm-auth.trusted-uris or just scroll down until you find it.
- Double click that line and put in the name of the server you want to use windows auth. Ex: localhost,.tgrayimages.com (multiple sites separated by commas)
- Click OK and restart Firefox
Yipee! Now you can uninstall IE! (just kidding)