My motherboard went bad and I have a new system. The hard drive was replaced (my bad) and I
loaded as many user files as I could from backup. The problem is that even though I have all my HTML
files for my website, they are located in a path that is not found by the editor. They are:
c:\users\william\My Documents\coffeecup software\HTML editor\projects\FIA site\HTML\ index.html .....
What should the path linkage be?

Is that c drive on your old system or your new one? If it it the old one, you may have to use the file explorer to locate them. The old c drive is perhaps not called c any more.
Another solution would be to fetch your site with all the files from the web. You may have to use a standalone ftp client to do that. CC's DFTP is very good and can zip up the whole domain before downloading it.

Each time you save a file with the HTML Editor it saves 2 files on your computer within the project you're saving. In the root (local) directory you'll find both a projectnamehere.cpf and a projectnamehere.cpfs file. Those are the files that tell the program where your project is (.cpf is HTML Editor and .cpfs is for S-Drive upload). Hopefully you don't have a ton of projects, but when you navigate back to them the program will then adjust those files on the new computer to tell it where they are now located.

If you saved the sharedsettings file that holds all your account information for the projects, you can put that file back in and it should then populate the projects on your list. The locations won't be correct, but they will all show up making it easier to know which ones you need. Just click them one by one and navigate to the new location and load it and the files will then be updated. Do this for each project and you'll be fine. There really is no "easy" way around this if the location is not exactly the same as it was before, not a defect of the program, just a hazzard of getting new computers.