Hi, I use Visual Studio.NET so I don't really know how to open it in other developpement environment. Here for VS.NET... I assume that you already have opened a icon resource into the resource editor. If you select the icon, you are supposed to see your icon with a palette toolbox. If you don't see the toolbox, you can make it display by clicking "image" in the main menu and selecting "show color menu".The transparent color is represented by computer-shaped color box. hope that help. Everything's beautiful if you look at it long enough...