Change the Internet Explorer title bar name to whatever you want

Just start Regedit and go to (all users):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main

or to (if only one user):

HKEY_USERS\.Default\Software\Microsoft\Internet Explorer\Main

and/or to (currently logged on user):

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main

Modify (or create if not present) the "Window Title" String Value in the right hand pane (don't type the quotes) to show the name of your choice: right-click in the right hand pane -> select New -> String Value -> name it "Window Title" (no quotes) -> double-click on it -> type your own, customized MS IE title bar name (for example I use IE6) -> click OK or press Enter.

Default is "Microsoft Internet Explorer". To revert to default, simply delete the "Window Title" String Value.