Menu Graphical Icons
Design and Skin Customization
Sorry no, there aren't any skins with menu icons out of the box.
You'll want to modify the header_menu_desktop.tpl and change the jrCore_lang text strings with your images, might be best to use the jrCore_image function like the logo image uses in the header.tpl file.
Example:
{jrCore_image image="logo.png" width="191" height="44" class="jlogo" alt=$_conf.jrCore_system_name custom="logo"}Hope this helps!