My blog http://www.tomsemmes.com/blog/ contains images of my artwork. When I go to insert the image I am hoping that it would give me the option to insert the image to fill the content area (about 550 pixels). Instead the options are either too small or too large so I have to do a lot of tweaking. Is there a way to set the standard size for say, the 'Large' option so it gives me a size I can use? Right now the size option for Large is about 1200 pixels and the size option for Medium is 250 pixels.