Try reading this thread -
http://forum.ppcgeeks.com/showthread.php?t=21571 . The icons don't show up by default - you have to edit the graphics files. If you have Photoshop a user here (Polen) created a set of actions scripts that automates making the cube. See my thread here -
http://forum.ppcgeeks.com/showthread.php?t=32851 - for my cube and links to the utilities I used to create it.