Removing one of two images in a sidebox

I have been trying to find where to edit <!--// bof: bannerboxall //-->
in order to remove one of two images in a sidebox. Sorry if this has been answered before but I either didn't find it or understand that I had.

In the original template there is a sponsor box with two images, a black and white image of the Zen Cart logo and a book to order. I wimped out and just made my image the same name as the book image which clearly isn't the correct way to do it but getting rid of the small image on top didn't work by simply deleting it.

Any help finding the correct place to edit this is greatly appreciated and will probably help me customize other parts of this template.

Thanks, Jack

admin > tools > banner box manager >

Thanks, took a little searching with all the banners and their file names but I found it. Jack