Excellent CNC work! I'm a bit jealous. But about the site...
The layout was okay, but it is a standard Zen/OSCommerce layout. Nothing special, seen it a thousand times. Looking at the code you do need to work a little bit on it.
1. You need to add !DOCTYPE
2. You need to add meta keywords and descriptions
3. If possible, remove the java script from the code and add it to an external .js file.
4. Your title "Pops Shop" needs to be a little more descriptive, possibly even having a keyword or two. Example "Woodworking and CNC routing from Pops-Shop.net".
5. If you look at the source code from page to page, the content is all the same. There is nothing there for the SE's to look at.
6. You do have a canonicalization issue.
7. I would recommend adding a sitemap.xml file, but due to the setup of the page the URL never changes so this would not do any good.
All in all it is not a bad page. From an
SEO point, the URL's not changing and source code not changing from page to page, I can see it being an issue. In having it set this way I think you kind of shot yourself in the foot as you cannot keyword any pages for any particular phrases.
I ran a spider test on your page as I was curious to see how many pages the spider would actually see. It only found 3 pages. They are:
http://www.pops-shop.net/
http://www.pops-shop.net/pops_shop1.htm
http://www.pops-shop.net/sawyer/index.php
How many pages has Google crawled and have actually indexed?