Re JPGs, if you scan it, you should then be able to save that image as a JPG. It depends what programme you use, but on my PC I just have the bog-standard MS photo-edit application and it offers you a number of Save As options, including .jpg, .gif, .tiff, .png, and a whole rake of others. I would probably choose .jpg (or .gif, though these are hungrier on the memory). You can email them that way, though I find PDFs easier to print out.