Windows XP A to Z - http://www.softwaretipsandtricks.com/windowsxp
Outlook Express Window title tweak
http://www.softwaretipsandtricks.com/windowsxp/articles/406/1/Outlook-Express-Window-title-tweak
Super Admin
 
By Super Admin
Published on 02/25/2005
 
Change the window title of Outlook Express to anything you want!

Outlook Express Window title tweak

Open regedit and navigate to HKEY_CURRENT_USER\Identities\{EE383506-901D-43C6-8E40-9A61901DF7CC}\Software\Microsoft\Outlook Express\5.0.  (the  {EE383506-901D-43C6-8E40-9A61901DF7CC} part will be different for you, it is an individual number)

 Add or modify the string key called WindowTitle and make its value the desired window title. Then close the registry editor, and restart Outlook Express (if it's running.) Your new title now shows up in the title bar!