How do I create a transparent-background logo in .png format?
You can use a variety of graphics program to create your logo. Any program that can export 32-bit .png files will work. A 32-bit image includes an “alpha channel” over and above the 24 color bits which define the transparency of each pixel in the image. Below you’ll find some simple step-by-step instructions for Adobe Photoshop 7 and MacroMedia Fireworks MX.