Designates the Microsoft Chat ActiveX control as administrator-approved.This control is used by Web authors to build text-based and graphical-based Chat communities for real-time conversations on the Web.If you enable this policy this control can be run in security zones in which you specify that administrator-approved controls can be run.If you disable this policy or do not configure it this control will not be designated as administrator-approved.To specify how administrator-approved controls are handled for each security zone carry out the following steps:1. In Group Policy click User Configuration click Internet Explorer Maintenance and then click Security.2. Double-click Security Zones and Content Ratings click Import the Current Security Zones Settings and then click Modify Settings.3. Select the content zone in which you want to manage ActiveX controls and then click Custom Level.4. In the Run ActiveX Controls and Plug-ins area click Administrator Approved.
Windows Components\Internet Explorer\Administrator Approved Controls
At least Internet Explorer 5.0