.ADM template for Sign On tool
There are some settings in the sing on tool such as "save password" on the options tab that are stored in the registry. As such, they can set using group policy. There is a .ADM file to assist in this process located at http://blogs.technet.com/msonline/archive/2009/02/09/microsoft-online-sign-in-client-adm-group-policy-object.aspx . While unsupported, this file could be quite helpful when configuring sign on client settings using group policy.
-brett