Hi bluxr6,
You can use the Windowsdefender.adm Group Policy template file to control the policy settings for Windows Defender when Windows Defender is installed on a computer that is running Microsoft Windows XP or a later operating system.
By default, the installation location of Windows Defender is the C:\Program Files\Windows Defender folder. The Group Policy administrative template file is put in the Windows Defender folder when you install Windows Defender. The file name of the Group Policy administrative template is Windowsdefender.adm. In Windows XP, the Windowsdefender.adm file is in the C:\Windows\inf folder. In Windows Vista, the Windowsdefender.adm file is in the C:\Windows\PolicyDefinitions folder.
You can use the Windowsdefender.adm template file to control the following policy settings for Windows Defender by following the instructions in the link below.
Description of the Windows Defender Group Policy administrative template settings
http://support.microsoft.com/kb/927367
Please post back and let us know if this has helped to resolve your issue.
Regards,
KarthiK TP