Each achievement should have two images: a small image and a large image. Both of these involve taking screenshots from the achievement viewer. Suppose game "Cool Game" has achievement "Do This". The small image should be titled Do_This.png which is 38x38 pixels and is equivalent to taking a screenshot of the achievement (with the yellow border), in the bottom part of the official achievement viewer. This image does not need transparency as it is on a blue background with a yellow border. There should also be a large image Do_This-large.png which is 128x128 pixels and is equivalent to saving the large image from the top-right of the official achievement viewer and converting it from .gif to .png. Both images should use the file ending ".png" and not ".PNG". The large image should then be l