To block pop-ups, use the following registry key:
- HKEY_LOCAL_MACHINE (or HKEY_CURRENT_USER)
- SOFTWARE
- Microsoft
- Internet Explorer
- Main
- FeatureControl
- FEATURE_WEBOC_POPUPMANAGEMENT
For more information on this topic, see http://msdn.microsoft.com/library/default.asp?url=/workshop/browser/hosting/wbcustomization.asp