I follow these steps: Download the cabs, copy dll and mui files to system32, register two dll's. When I open Internet Explorer and go to "Security - Windows Update" the WINDOWS UPDATE web page opens, and let me to choose what type of installation i want (Express or customize). What i want is when i click on "Security - Windows Update" the MICROSOFT UPDATE web page opens, instead of WINDOWS UPDATE. => To do this, i execute a vbs script (http://msdn.microsoft.com/en-us/library/windows/desktop/aa826676(v=vs.85).aspx). (I think this script downloads muauth.cab from Internet and set various regkeys, of course the script tells to the Windows Agent to use MICROSOFT UPDATE instead of WINDOWS UPDATE to download new updates.) I would like to do this without Internet connection (trough copy files or regkeys), but this is not imporant so far. When i registered MICROSOFT UPDATE (trough vbs script), and opened "IE - Security - Windows Update", the web page opens and forces to me to install and ActiveX (Microsoft Update ActiveX), I do the steps says 5eraph but IE continues to forces to install the Activex. Is the anyway to skip this Activex, or to install manually or to do something so when i open MICROSOFT UPDATE web page let me to choose what type of installation direclty (Express or customize)? PD: This afternon i will try the other methods to see if it works PD2: Please 5eraph, send me the steps to => "Use Microsoft Update by default instead of Windows Update, further steps are involved which I'll detail if you'd like" Thanks a lot.