Thanks Stan
Hey Steve...
The image has to be uploaded first via your web FTP (whoever your provider is should have given you these links) and into the proper directory. For example, DreamHost (my provider) is shown in the first image here. I've chosen my site "welcometoboneville", then styles, then imageset. I then upload the banners I've made into imagesets.
2nd step is, from the main Usagi Forum Board page, you should be able to login to the
Admin Control Panel. (see 2nd screenshot) Now go to Styles, then on the left you should see Templates/Themes/Imagesets. Choose ImageSets and then you can choose the image you just uploaded via FTP that you want to place in the banner.
Does this help?
FTP:

ACP index:
