the meta tags are on the individual pages. for example, on the aboutus.php page, the meta tag code looks like:
<meta http-equiv="description" content="<?php echo str_replace("[Site Name]",str_replace('"','"',$WAGLOBAL_Site_Name), WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, "Company Info", "meta-description")); ?>">
<meta http-equiv="keywords" content="<?php echo str_replace("[Site Name]",str_replace('"','"',$WAGLOBAL_Site_Name), WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, "Company Info", "meta-keywords")); ?>">
you can add the closing tag by changing that to:
<meta http-equiv="description" content="<?php echo str_replace("[Site Name]",str_replace('"','"',$WAGLOBAL_Site_Name), WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, "Company Info", "meta-description")); ?>" />
<meta http-equiv="keywords" content="<?php echo str_replace("[Site Name]",str_replace('"','"',$WAGLOBAL_Site_Name), WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, "Company Info", "meta-keywords")); ?>" />