If you use the instant messenger Messenger Live regularly you might also have looked around for customizing it further. Messenger Live Toolbox (MLT) can do that. MLT adds many customization options to Windows Live Messenger.
These changes can be divided into changes to the interface itself and to the visual display of Windows Live Messenger.
MLT provides the means to hide many of the buttons that are displayed in Windows Live messenger like the games, video call or voice clip button. It can furthermore move selected toolbars or buttons to a new location or align them differently in the instant messenger.
The second group of changes can be made to the visual appearance of Windows Live Messenger. It is possible to select different kinds of backgrounds for several windows including the logon, contact list and chat window. Then different fonts and colors can be selected for various textual displays in Windows Live Messenger.
MLT provides the means to change the look and feels of Windows Live Messenger. It lists all the options in one window to make them easier accessible.

A special script is created to go along with this skin. The Script is called "MLT Add-On" and allows anybody to add his own pictures to the Skin, to restore the default settings of the Skin, to replace all the backgrounds pictures of the Skin, to remove Windows Aero Frame and to CREATE HIS OWN SKIN. The Script can be downloaded at http://www.guena.eu/Update/mltudt_EN.html

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More Info: http://www.guena.eu/PlusSkins/MessengerLiveToolbox/mlt.htm