Where lulu.com comes into the discussion is that the first page which loads -which has the source code which begins:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en">
<head>
<title>Zen Cart!, The Art of E-commerce</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="keywords" content="ecommerce, open source, shop, online shopping " />
<meta name="description" content="Zen Cart! : - ecommerce, open source, shop, online shopping" />
etc.-
is the page I'm trying to give a background image to. I can change colors on this page changing my stylesheet.css file but nothing I change in that file yields a background image. I assume the aforementioned source code originates with lulu.com because it certainly isn't served from my hosted site. It originates external to any site that I have any influence over.
I'll look deeper into the FAQs for an answer, but frankly nowhere can I find any effort to systematically lead a user step by step through the process of changing the appearance of their Zen Cart site. All the information is atomized and distributed associatively, not systematically and inclusively. I suppose the manual that's being sold for appx. $50 accomplishes this, but for the time being I'm trying to achieve an equilibrium whereby I earn more from a product than spend attempting to market it.