Changing filename from specials.php to sales.php

For SEO reasons we would like our Zen Cart specials page to have the url contain the word "sales" instead of "specials". I've changed the language files for the page title, etc. but, I realize to actually change the url I would need to change the file name. What would be involved in doing this - I know I'd need to change the define in the filenames.php file, but what other files would be affected? Are there repercussions that I need to consider? I thank you for your time!

Take a look at the About Us plugin, as it contains a collection of files required to "add a new page" to the site. It has a few additional things such as extra links added to sideboxes and site-map, which may be of less concern to your situation. But the basics are covered.