I want to be able to preview nef files (nikon's raw image files). None of that I've seen are larger than 12 megabytes. Now in my file manager (caja) I can selecteither 10 or 100 MB. When the preview size is larger it slows the computer down so my question is how can I make it so that the maximum preview size is 15 megabytes. Or else should I just set it to 100 and not worry about it? But then again if I do that I might as well just set it to a a gig. :-)~MIKE~(-: