Those instructions are ridiculous. You have to pull out a freaking calculator to figure out what % you need to shrink the image to get it from original size down to 100 pixels. Also, that piece of shit has no way to maintain aspect ratio, meaning you have to calculate BOTH height and width. In all respectable image editing programs, the height and width are linked, so if you bring the width down to 100 pixels, the height automatically changes to keep the image from being stretched vertically or horizontally. Junk, that program is junk! And it irritates me because I often have people ask me how to resize images without having to buy any software. That free Windows program is the only one that I KNOW everyone has on their system. But it's worthless.