I have not been able to find much time to participate in this challenge, but I did manage to whip up a Dirther Ordered converter. When the exe is run it will open a file requester and you should point to an image either jpg or png. Then it will open a window the same size of the image, so make sure that the image you pick is smaller than your desktop size, and then it will convert the image and display it.
[edit] Changed image so that it is added to the post instead of linked.