IDocHostUIHandler::GetHostInfo
You use IDocHostUIHandler::GetHostInfo to tell MSHTML about your application's capabilities and requirements. With it you can control a variety of things, for instance:
You can disable the browser's 3-D border.
You can prevent scroll bars or change their appearance.
You can disable script.
You can define how you want to handle double-clicks.
http://www.codeproject.com/atl/vbmhwb.asp
An ATL control for hosting and customization of multiple instances of WebBrowser control for VB