SOLVED!
Tried to put it somewhere and it works!
for anyone looking for this i just put the link in between those codes..
for starters like me.. override your default template and make sure you copy the tpl_header.php to the template you are using right now and thats where you modify.
Code:
<li><?php echo '<a href="' . HTTP_SERVER . DIR_WS_CATALOG . '">'; ?><?php echo HEADER_TITLE_CATALOG; ?></a></li>
<a href="http://mysite/blog/">Blog</a>
<?php if ($_SESSION['customer_id']) { ?>
Thanks perfect concepts
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