Ok, you would need to change menu.php in either cssmw_content or cssmw_home - I wouldn't be able to tell and just make the change, upload, test and check the live site.
To tell exactly which it is, you could look at one of the pages that you find the menu on and see which menu is referenced on it.
To get the cms menu system back you will need to revert the menu.php file you changed found in cssmw_cms