How to change hard drive picture on your mac?

Question

on my mac on the desktop there is four external hard drives and they all have a usb symbol and i want to be able to change the picture so that they look different like on the one for my itunes music i want to put a itunes symbol but i don't know how please help thanks

Answer 1

Easy here

http://support.apple.com/kb/HT2493?viewl...