Mohlo by to být toto?
http://www.amset.info/windows/policy.asp
uplně dole
Applying Internet Explorer Security Settings to All Machines
nebo
http://johnckirk.livejournal.com/224270.html
Hledáno na: http://www.google.com/search?hl=cs&q=Windows+Integr ated+authentication+GPO&lr=&aq=f