I've read plenty of guides, but I do what they say to change an icon and it just doesn't work. I want to change the HD icon on the desktop to something I downloaded. How do I do that?
Select the icon, press COMMAND-I, select the picture of the icon in the top of the Get Info panel such that it is highlighted blue. Now, select the Hard Drive, press COMMAND-I, select the icon of the Hard Drive in the top of the Get Info panel and paste.