Magento 1.7 – How to Change Meta Description, Keywords, and Title

I've checked in both the admin area configuration > design > HTML Head.

The current title, description and keywords currently don't come from here although in the backend file head.phtml the code written pulls in these Fields I believe.

(I'm still learning Magento)

Here is the code in the previous mentioned file

<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Academic Free License (AFL 3.0)
 * that is bundled with this package in the file LICENSE_AFL.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/afl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    design
 * @package     base_default
 * @copyright   Copyright (c) 2011 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
 */
?>
<meta http-equiv="Content-Type" content="<?php echo $this->getContentType() ?>" />
<title><?php echo $this->getTitle() ?></title>
<meta name="description" content="<?php echo htmlspecialchars($this->getDescription()) ?>" />
<meta name="keywords" content="<?php echo htmlspecialchars($this->getKeywords()) ?>" />
<meta name="robots" content="<?php echo htmlspecialchars($this->getRobots()) ?>" />
<link rel="icon" href="<?php echo $this->getFaviconFile(); ?>" type="image/x-icon" />
<link rel="shortcut icon" href="<?php echo $this->getFaviconFile(); ?>" type="image/x-icon" />
<link href='http://fonts.googleapis.com/css?family=Open+Sans:400,600,800,700' rel='stylesheet' type='text/css' />
<script src="<?php echo $this->getSkinUrl('js/jquery-1.7.min.js') ?>" type="text/javascript"></script>
<script type="text/javascript" src="<?php echo $this->getSkinUrl('js/scripts.js') ?>"></script>
<script type="text/javascript" src="<?php echo $this->getSkinUrl('js/jquery.prettyPhoto.js') ?>"></script>
<script type="text/javascript" src="<?php echo $this->getSkinUrl('js/jquery.color.js') ?>"></script>
<!--[if lt IE 7]>
<script type="text/javascript">
//<![CDATA[
    var BLANK_URL = '<?php echo $this->helper('core/js')->getJsUrl('blank.html') ?>';
    var BLANK_IMG = '<?php echo $this->helper('core/js')->getJsUrl('spacer.gif') ?>';
//]]>
</script>
<![endif]-->
<!--[if lt IE 8]>
<div style=' clear: both; text-align:center; position: relative;'>
 <a href="http://windows.microsoft.com/en-US/internet-explorer/products/ie/home?ocid=ie6_countdown_bannercode"><img src="http://storage.ie6countdown.com/assets/100/images/banners/warning_bar_0000_us.jpg" border="0" height="42" width="820" alt="You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today." /></a>
</div>
<![endif]--> 
<!--[if IE]>
    <link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css' />
    <link href='http://fonts.googleapis.com/css?family=Open+Sans:600' rel='stylesheet' type='text/css' />
    <link href='http://fonts.googleapis.com/css?family=Open+Sans:700' rel='stylesheet' type='text/css' />
    <link href='http://fonts.googleapis.com/css?family=Open+Sans:800' rel='stylesheet' type='text/css' />
<![endif]-->
<?php echo $this->getCssJsHtml() ?>
<?php echo $this->getChildHtml() ?>
<?php echo $this->helper('core/js')->getTranslatorScript() ?>
<?php echo $this->getIncludes() ?>

I tried commenting out line 29
<meta name="description" content="<?php echo htmlspecialchars($this->getDescription()) ?>" />
This makes the meta description vanish so I know this is the correct file generating the text but I can't figure out where I edit the input fields?

Thanks for any help.