Having problems modifying my 404.php (Error file)

Hi all,

Im trying to make my 404.php look slightly prettier and also use a re-direct back to my blog, only problem is I cannot get any new content Im putting into the 404.php file to show up on screen….?

The site/blog is not currently live as Im testing everything locally on my WAMP server Ive installed.I dont know if this is the cause, it shouldnt be… ?

PLEASE NOTE! I have placed a standard <p> tag in to test the 404 error page to see if the new content is shown but I just keep getting the default 404 message, its not even producing my header/sidebar/footer just literally a blank white canvas with “Not Found” in bold lettering followed underneath by “The requested URL /wordpress/dgdghdgdg was not found on this server.”

The code for my 404.php file :

<?php @header("HTTP/1.1 404 Not found", TRUE, 404); ?>
<?php get_header() ?>
	<div id="container">

		<div id="content">
	<p>This is some random text to test the page</p>
			<div id="post-0" class="post error404">

			<?php thematic_404() ?>

			</div><!-- .post -->

		</div><!-- #content -->
	</div><!-- #container -->

<?php thematic_sidebar() ?>
<?php get_footer() ?>