SweetIM for Messenger is a freeware i.m. application.
Here are some screenshots to illustrate the features and user interface of this application:
Emoticons, Winks & Smileys for Messenger. Screenshot of SweetIM for Messenger - 797px · 599px1000's of Emoticons, Smileys, Winks & more for MSN, Yahoo & ICQ Messenger. Screenshot of SweetIM for Messenger - 700px · 527pxSweetIM for Messenger: User interface. Screenshot of SweetIM for Messenger - 504px · 386pxScreenshot of SweetIM for Messenger - Size: 346px · 245px