ActiveX controls are software components used by web pages to allow your browser to do something with the page, much like a Java applet. They make the website more interactive and program-like. For example, a page might have an ActiveX control to allow viewers to see a working excel spreadsheet in a webpage. Like any piece of technology, the bad guys sometimes create pages with malicious ActiveX components. That threat is why warning messages sometimes appear across the top of your browser warning you that a page uses ActiveX controls. If you trust the page’s authors and want to see the active content, click on the warning message for options.