This page allows you to upload emoticons (smileys) to your site that will appear in comments and messages when user uses a shortcut.
Click on "new emoticon" link to add a new emoticon. In the shortcut text box, specify text shortcuts that should be replaced with this emoticon image. You may place each shortcut on a new line.
Make sure not to upload images that are too large as it may mess up the layout of the site.