If you have enabled your content advisor ratings for Internet Explorer, but somehow forgot your password, IE will simply not work. You won't be able to view any sites.
Fortunately, the password file is stored in the windows registry, so you can edit the file. Go to "run" on your start button, and type "regedit". Now look in the following location for the rating key
HKEY_LOCAL_MACHINE\software\microsoft\windows\curr ent version\policies
Simply delete the rating key, and Internet Explorer will work. You can enter a new password and re-enable your content advisor.
From :
http://www.webworksgy.com/tips.htm#QT14
Be carefull while working in the registry you might do serious damage to windows if you edit it incorrectly.
Good luck!
Vern