I got this to work. Wherever there was a line number referenced I looked to see if there was similar code. If there was, then I replaced it with the code from the contribution. If there wasn't similar code then I inserted it at or near the code line that was referenced. Be sure to include comments and test after each change.
I had to change the length of the database field "products_image". I set mine to 128 characters.
My question now is how do I now get multiple images to display in the product page? For starters, I have created new database fields called "products_image02", "products_image03" etc. Using EP I have uploaded the URL's of the additional images and I can see them in the database fields. I do not know how to call them from the database to display in product page.
Here is the site:
http://www.micmed.com/simpsoncycles/
The image names come from another application, so using common basename+ consecutive numbers will not be practical. The images HAVE to served from another location. There are hundreds of items that will be uploaded each week. There are 10 image field URL's that will be uploaded for each item via EP.
The main page images are local. The additional images on the product page are in the HTML, but my client does not want to have to insert them into the HTML product description.
I had an email exchange with the author. They were just experimenting with this about 4 years ago and has since moved away from PHP programming.