Hi ckosloff
Have a look at my live HTML site and you will see what I mean.
https://www.merlinmounts.co.uk
In the left hand side box -Navigation Box - there are links to the various pages. Product pages if you will. Similar to ZC Category side box.
My Custom Mount Calculator HTML page is actually not a page that contains products per se It is an information gathering page before calling a php file to do the calculations which is then displayed on another results.HTML page.
Web pages - by default - really have the main Nav sidebox on the left.
ZC has the category sidebox.
As suggested, I have transferred the HTML coding into the Category description box. That category name is also added to the category sidebox list. When I select/click on that link (in the sidebox) I am correctly taken to that category page, where I do see the coding presented correctly. However some of the coding does not seem to work in the ZC format. Now I do know the coding is correct because it works on the live site. I do not know why it will not work when it has been transferred into ZC.
My other question still: Where do I put the calculation.php file. I have tried putting it into the store root. Yet it is not called or actioned. Likewise where do I put the results.HTML page/file.
As I stated If I retain my original HTML pages and call them by using an external Link. How do I put that link into the Categories Sidebox.
I do not wish to use the Information side box or the Header/Footer linking system. Customers are generally lazy and automatically look at the left hand Nav bar/Category sidebox (call it whatever you want) for their requirements. They will not look at headers/footers information sidebox for products. They will only look there for privacy/FAQs/T & C's etc..