You can customize the icons on your desktop using this Radio Icon library. Simply unZip the file you have downloaded and extract the file RADIO.ICO to the folder you wish, then go to the properties of the icon you want to replace and choose the "change icon" function.
Important notice: Some users have reported problems using this Icon library with 64 bit operating systems. I have no solution to that problem so far.
That's all ! Simple...isn't it?