A.Provide all users with the ability to access and use the Windows Update Web site
B.Upgrade all client computers to either Windows 2000 Professional or Windows XP Professional. Implement Software Update Services （SUS）
C.Upgrade all client computers to either Windows 2000 Professional or Windows XP Professional.Make all users members of the Power Users group on their client computers
D.Install the Active Directory Client Extensions on all Windows 95， Windows 98， and Windows NT Workstation 4.0 computers. Manually download all security patches to a Distributed File System （DFS） replica. Instruct all users to use the DFS replica to install security patches
E.Install the Active Directory Client Extensions on all Windows 95， Windows 98， and Windows NT Workstation 4.0 computers. Install a Software Update Services （SUS） server and make all users local administrators on their client computers

A.Create a separate domain for courier authentication
B.Implement smart card authentication for business office users and couriers， upgrading client operating systems as needed. Modify the Web kiosks to require smart card presence for continued access
C.Modify the Default Domain Policy Group Policy object （GPO） so that couriers must use complex user account passwords. Require all couriers to change their passwords the next time they log on to the Web application
D.Use Encrypting File System （EFS） to encrypt all files that contain customer data