First I went in and uploaded file config.simple_categories_tree.php to the includes/auto_loaders file. Then I uploaded file simple_categories_tree.php to the includes/classes location.

I then went in and renamed the files that I needed as backups so I would not loose them by adding a _ at the end of those file names. I then uploaded the modified files header_php.php to the includes/modules/pages/index and dafault_filter.php to the includes/index_filters files.

Nothing happened so I did your step three and made sure all your modifications were in the uploaded files as described by the directions many times.

I have looked it over a lot and just can't seem to see what I did wrong.

Thank you so much for your help. This mod will be wonderful to have and I sure appreciate your offering it to us for use and being willing to help us get it up and running when you can.