Does your FTP area have a "www" or "public_html" or "htdocs" or "httpdocs" or "wwwroot" folder? These foldernames are the common names for what is referred to as the "webroot", which is where all website content is served from.
Your Zen Cart files (or *any* files to run your website, for that matter) need to be under that folder. If they're not, then you're going to get "not found" errors ... because ... it's not found!




