This happens on several sites in IE running under Windows Vista.  I click on
an information link on the page to get a further definition.  These point to
a URL.  I get an error message showing the URL text and the message "Class
Doesn't Support Automation".  However, a tab will open on the bottom of the
screen.  If I click on the tab, the window with the information comes up.  It
tells me it doesn't work but in reality it does.  

Is this something I have set wrong or are the sites just not compatible with
the new IE under Vista?