To change the title text to say what you want, open the includes/languages/english/meta_tags.php file in your text editor. Find the following line of code:
// page title
define('TITLE', 'Zen Cart!');
// Site Tagline
define('SITE_TAGLINE', 'The Art of E-commerce');
Replace the title and tagline text with your own text, making sure that the single quote marks are not left out and new quote marks are ...