Disable SmartQuotes

Create the file TurnOffSmartQuotes.php and paste the below into it:

<?php /* Plugin Name: TurnOffSmartQuotes Plugin 
URI: 
Description: Stops WordPress from converting your quote symbols into smartquotes. The lines below stop the smartquote conversion. 
Version: 1.0 
Author: Steve Moyes Author 
URI: http://cdstealer.com */ 
remove_filter('the_content', 'wptexturize'); 
remove_filter('widget_text', 'wptexturize'); 
remove_filter('the_excerpt', 'wptexturize'); 
remove_filter('the_rss_content', 'wptexturize'); 
remove_filter('the_title', 'wptexturize'); 
remove_filter('single_post_title', 'wptexturize'); 
remove_filter('comment_text', 'wptexturize'); 
remove_filter('comment_author', 'wptexturize'); 
remove_filter('list_cats', 'wptexturize'); 
remove_filter('category_description', 'wptexturize'); 
remove_filter('bloginfo', 'wptexturize'); ?>

Now it's just a case of enabling the plugin within the plugins menu in siteadmin.