Bismillah! Microsoft Windows has usually simple icons for a folder and if you are viewing the folder in thumbnail view then you will see that some of the pictures inside the folder become its thumbnail. If the folder has no picture, then the thumbnail of that folder will be a large folder icon. But we can also change the icons / thumbnails of folders to differentiate and classify them. For example for the folder of pictures, you can set a picture of camera as its icon or for the folder with audio files, you can set a speaker or microphone as an icon etc.
This tutorial is about changing / replacing icons and thumbnails of a folder in windows XP. So follow the simple steps given below: