Title bar is the top part of the Internet Explorer that will use to show the title of the appearing website. The Webmaster uses it to inform the users what title of the web page is. And sometimes when you install some program on your computer, the message on the title bar might be changed.
Click "Start"/"Run.." and then type "regedit" in the required box before click "OK".
The page "Registry Editor" will be shown and the go to directory by following these steps.

HKEY_LOCAL_MACHINE (For Win 95/98) or
HKEY_CURRENT_USER (For Win 2000)

Software > Microsoft > Internet Explorer > Main

There will be a key name "Window Title" on the right when you can delete, edit, and add in the case that never happen before.
Delete : delete the key "Window Title"
Edit : Double click "Window Title" and change the message
Add in the case that never happen
Right click on the right window
Select "New" | "String Value"
Type "Window Title" and click "Enter" 2 times
In the field "Value Date " put the message would you need
Click "OK" and get out form registry edit.