Have I been really, really dumb in installing this? When I check the CSS statements in the file links_submit.css I see references to images that do not appear to have been included with the download e.g

HTML Code:
/catalog/includes/templates/barebones/images/personal.png
and

HTML Code:
/catalog/includes/templates/barebones/images/contact.png
and so on...

I've done a thorough file search and can't find any of the image files referred to in this CSS file.

Can anyone tell me if I need these files, and if so, where are they available for download?