Alpha blending can be called in other words transparency; it basically means assigning a value to a pixel (or full image, i think) that defines how much of the color (supposedly) behind him will be mixed with that pixel value well you draw the image in a background this value, or in other words the place were you store it is called the alpha channel (all right, was that right, wrong, or close but no bonus?)
Don't object with me on this one!
