http://msmvps.com/blogs/richardwu/archive/2006/02/23/84589.aspxHere is the info of the protected mode in Vista IE7 from the IE Team Blog: Microsoft Windows Vista introduced an enhanced security model that we were able to build on in Vista's version of IE7. I want to tell you about a new major IE defense-in-depthenCommunityServer 2008.5 SP2 (Build: 40407.4157)