Thanks again George!
Sorry for the misunderstandings. It looks like I should get Calibre to output the first time in some format other than MOBI; then perhaps, reconvert to MOBI.
I've run the .mobi file you sent me and it does work, as you say.
Earlier in the day I tried another approach. I found sealwyf's website which offered a complete book, in a zipped folder of an html file, a cover, and a couple of simple pictures:
http://sealwyf.wikispaces.com/Kindle...3b8c376529f254
I downloaded the td3.zip file from the Presentation Files section of the page (on about the 2nd 'screen' down) and converted each piece as required into the details of my book. It looks like that system could be used to set the book up, but I will not be able to resist trying out your method, so I can use .doc files directly, and compare which is best. I strongly recommend this to anyone trying to set up a mobi file as their input to Calibre, as I think it is the easiest to understand, and avoids the complications of
Thanks all the same and Happy Christmas! (whenever it is for you :-) )
Cheers. (Very U-boatish avatar! :-) )