First:
Run the following SQL statement from admin -> tools -> Install SQL Patches
cut-and-paste the code into the query field and press 'Send' instead
DELETE FROM configuration WHERE configuration_key = 'DEFINE_LINKS_STATUS';
INSERT INTO `configuration` VALUES (NULL, 'Define Links Status', 'DEFINE_LINKS_STATUS', '1', 'Enable the Defined Link/Text?<br />0= Link ON, Define Text OFF<br />1= Link ON, Define Text ON<br />2= Link OFF, Define Text ON<br />3= Link OFF, Define Text OFF', 25, 999, NULL, now(), NULL, 'zen_cfg_select_option(array(''0'', ''1'', ''2'', ''3''),');
Second:
Open includes/templates/YOUR_TEMPLATE/templates/tpl_links_default.php
find the following:
<?php include(DIR_WS_MODULES . zen_get_module_directory(FILENAME_LINK_LISTING)); ?>
Just above this code add the following:
<?php if (DEFINE_LINKS_STATUS >= '1' and DEFINE_LINKS_STATUS <= '2') { ?>
<?php require($define_page); ?>
<?php } ?>
Save the file and upload to your server