Thank you very much for getting back to me, Brett.
I have SSI on this account, and can also use CGI. However, the guy did get three new and better domains yesterday.
I guess that sounds like he's just domain happy.. :) But in all honesty what he believed was that the search engines were reading his domain names for ranking so he bought every variation of his product line name he could think of (without the hyphens). Then he set the server up so that everything pointed to this one index page.
He is practically non-existant in the search engines at the moment. And that considered, I am thinking that my best idea would be to simply keep his e-commerce site up as it it and then use one, two, or three of the new domains to optimize the site by linking through to his existing e-commerce site.
Again, any feedback is appreciated. This is kind of client that you want to have as he is so easy to work with and flexible on the cash. So, I'd like to make sure I do a good job for him.