1. In the header.php in the default classic there is a picture the header main bar. I cannjot see where the picture come from and what the files is. I cannot look it up if I don't know the files name of the image. Can you help me as I would like to addmy company logo in the header. Next:

2. I would like to understand where the image for the zen+cart logo is located. I put a gif file called letterhead.gif in the images file and then replaced the logo.gif in the hearder.php with letterhead.gif and it does not show up. I also used image/lettehrhead.gif and it does not show up. Below is code from the hearder.php file showing where the logo.gif (which is the zen-cast logo). I does not specify apath to the image.

// added defines for header alt and text
define('HEADER_ALT_TEXT', 'Powered by Zen Cart :: The Art of E-Commerce [home link]');
define('HEADER_SALES_TEXT', '<h1>TagLine Here</h1>');
define('HEADER_LOGO_WIDTH', '200px');
define('HEADER_LOGO_HEIGHT', '70px');
define('HEADER_LOGO_IMAGE', 'logo.gif');