Use this to open .raw files. These are raw image files, just bare RGB, nothing else, not even dimensions. Use this to open a raw image file and if you do not know the length and height when asked, enter nothing for these then enter 'y' to get your image dimensions. Thought that a guesser would help users to open their images / and find what the length and width are! Pretty simple. I use Photoshop to convert image files to raws then open the .raw in a hex editor. For Mac OS X users, use 'http://www.suavetech.com/0xed/' as the hex editor and for Windows users use 'http://download.cnet.com/HxD-Hex-Editor/3001-2352_4-10891068.html?' If you know of any other ways to convert an image to a raw, please tell me in the comments. If you can't convert an image file to a .raw, that's a shame, you could try and enter in hex colours to make mini test images.
@RobCrafter