This post discuss the improvements made to Group Policy support for Internet Explorer 8 as of now Beta 2. For those of you who might be new to Group Policy, here is a quick background. Let’s first assume you use an Active Directory environment to administer the computers in your corporate network. If that is the case, Group Policy provides a wide set of policy settings to manage IE8 after you have deployed it to your users' computers. These settings are locked down and cannot be changed by users, as they are always written to a secure tree in the registry.
Group Policy allows you to create IE (and other software) configurations as a part of Group Policy objects (GPOs). The GPOs are linked to hierarchical Active Directory containers such as sites, domains, or organizational units. A client-side extension ensures that your policies are applied and refreshed regularly.