I ended up downloading the page and opening the html in notepad, and what I saw had me kind of concerned: the meta tags (both kw and description) had line breaks in them, and there were no quotation marks around their names. So we had stuff like
<META content="kw1 kw2 kw3" name=keywords>I was concerned. She told me she'd go out to the Zen Cart forums and ask about it. They told her that what I was seeing was showing up because I'd saved the file locally, and that all I needed to do to view the source "normally" is to go to the page in my browser, click inside the location bar, go to the end of the URL, hit enter, and THEN I'd be able to view the source code normally.
And yes, I do that, and it works, but obviously a spider isn't going to go through all that
So... I decided to try to see what a spider would see. In the lynx viewer the page is fine, but it doesn't display meta tags. So I tried looking at it with the spider simulator at http://tools.summitmedia.co.uk/spider/
It choked. It came up with the keywords, but told me the description tag was missing. Another spider simulator, the one at http://seo.zunch.com/spidersim.html told me the metas were fine, but it found a line break or two in the title tag.
So, I guess I've got two questions: First, does anyone have experience with Zen Cart, and have they experienced any problems with it? Second, is there a better spider simulator I can run these pages through to get a better idea of what Googlebot and Slurp will see?