That sounds like what I need to do. I'm not exactly sure how to go about it though..

below is my tpl_search_header.php

Code:
<?php
/**
 * Side Box Template
 *
 * @package templateSystem
 * @copyright Copyright 2003-2006 Zen Cart Development Team
 * @copyright Portions Copyright 2003 osCommerce
 * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
 * @version $Id: tpl_search_header.php 4142 2006-08-15 04:32:54Z drbyte $
 */
  $content = "";
  $content .= zen_draw_form('quick_find_header', zen_href_link(FILENAME_ADVANCED_SEARCH_RESULT, '', 'NONSSL', false), 'get');
  $content .= zen_draw_hidden_field('main_page',FILENAME_ADVANCED_SEARCH_RESULT);
  $content .= zen_draw_hidden_field('search_in_description', '1') . zen_hide_session_id();

  if (strtolower(IMAGE_USE_CSS_BUTTONS) == 'yes') {
    $content .= zen_draw_input_field('keyword', '', 'size="6" maxlength="30" style="width: 100px" value="' . HEADER_SEARCH_DEFAULT_TEXT . '" onfocus="if (this.value == \'' . HEADER_SEARCH_DEFAULT_TEXT . '\') this.value = \'\';" onblur="if (this.value == \'\') this.value = \'' . HEADER_SEARCH_DEFAULT_TEXT . '\';"') . '&nbsp;' . zen_image_submit (BUTTON_IMAGE_SEARCH,HEADER_SEARCH_BUTTON);
  } else {
    $content .= zen_draw_input_field('keyword', '', 'size="6" maxlength="30" style="width: 150px" value="' . HEADER_SEARCH_DEFAULT_TEXT . '" onfocus="if (this.value == \'' . HEADER_SEARCH_DEFAULT_TEXT . '\') this.value = \'\';" onblur="if (this.value == \'\') this.value = \'' . HEADER_SEARCH_DEFAULT_TEXT . '\';"') . '&nbsp;<input type="image" src="http://www.mysite.com/store/images/new_template_images/search_button.png" value="" />';
  }

  $content .= "</form>";
?>
I'm not sure exactly where I will be able to apply the id to the input field.

Your help is appreciated.

thanks,