First of all thank you very much for the work !!!
I have a small problem, while installing the latest version of header tags seo on OSC 2.3.3 my include/header.php looks absolutely different than the one in the manual, so at point 7. of the manual i can not make the changes i have to. My header.php looks like:
<?php
/*
$Id$
osCommerce, Open Source E-Commerce Solutions
http://www.oscommerce.com
Copyright (c) 2010 osCommerce
Released under the GNU General Public License
*/
if ($messageStack->size('header') > 0) {
echo '<div class="grid_24">' . $messageStack->output('header') . '</div>';
}
?>
<?php
if (isset($HTTP_GET_VARS['error_message']) && tep_not_null($HTTP_GET_VARS['error_message'])) {
?>
<table border="0" width="100%" cellspacing="0" cellpadding="2">
<tr class="headerError">
<td class="headerError"><?php echo htmlspecialchars(stripslashes(urldecode($HTTP_GET_VARS['error_message']))); ?></td>
</tr>
</table>
<?php
}
if (isset($HTTP_GET_VARS['info_message']) && tep_not_null($HTTP_GET_VARS['info_message'])) {
?>
<table border="0" width="100%" cellspacing="0" cellpadding="2">
<tr class="headerInfo">
<td class="headerInfo"><?php echo htmlspecialchars(stripslashes(urldecode($HTTP_GET_VARS['info_message']))); ?></td>
</tr>
</table>
<?php
}
?>
But the manual says:
7) In includes/header.php,
FIND:
<div id="header" class="grid_24">
ADD ABOVE:
<?php /*** Begin Header Tags SEO ***/
if (HEADER_TAGS_DISPLAY_PAGE_TOP_TITLE == 'true') {
?>
<div style="text-align:center; color:#aaa; font-size:10px;"><?php echo $header_tags_array['title']; ?></div>
<?php
}
/*** End Header Tags SEO ***/
?>
FIND:
<div id="storeLogo"><?php echo '<a href="' . tep_href_link(FILENAME_DEFAULT) . '">' . tep_image(DIR_WS_IMAGES . 'store_logo.png', STORE_NAME) . '</a>'; ?></div>
REPLACE with:
<?php /*** Begin Header Tags SEO ***/ ?>
<div id="storeLogo"><?php echo '<a href="' . tep_href_link(FILENAME_DEFAULT) . '">' . tep_image(DIR_WS_IMAGES . 'store_logo.png', (tep_not_null($header_tags_array['logo_text']) ? $header_tags_array['logo_text'] : STORE_NAME)) . '</a>'; ?></div>
<?php /*** End Header Tags SEO ***/ ?>
Note: There are four extra fields, logo_text_1 through logo_text_4 that can be used
for displaying text for additional images in the logo, or anywhere on the page
if you like. The same code as above would be used except the logo_text would
have to be changed to logo_text_1, and so on.
New 
