Hi. I am trying to change my logo.
I uploaded the logo to my ftp. (Where my previous logo is kept)
I then changed the "header.php" file to encoporate my changes.

// added defines for header alt and text
define('HEADER_ALT_TEXT', 'Powered by Zen Cart :: The Art of E-Commerce');
define('HEADER_SALES_TEXT', 'gamenet');
define('HEADER_LOGO_WIDTH', '800px');
define('HEADER_LOGO_HEIGHT', '64px');
define('HEADER_LOGO_IMAGE', 'logo+number.gif');

I then uploaded it yesterday. And it is still not changed. The original logo is still up.

note: There is only one copy of the header.php in the file.
under Includes > languages > english