I'm a first time poster and trying to learn more about the MOBI format, in particular how to set the cover and thumb art on a mobi file. I was searching the web for information on configuring the cover art and thumb art in a MOBI file and stumbled across a posting by huskies4all ("Mobi2Mobi GUI Cover Art Help?") in this forum that talked about those two things, but it kind of left out some information that I'm hoping someone who reads this might be able to fill in for me. How do you find out where the images are located in the file? I was looking at huskies4all's file, and I couldn't figure out where tompe was getting the numbers. If someone could look at the file that huskies4all posted in that thread and help me understand how these numbers are found, I would greatly appreciate it