Fatal Error

Right, so i am a WordPress newbie, and ive been following a tutorial online showing me how to make a basic theme, ive done as asked.
– Installed it
– Inside WP-content/themes/ ive made a folder
– in that folder i have made index.php, header.php, footer.php, sidebar.php, functions.php and style.css
– I upload all my files to my server and i get an error message! 🙁
“Fatal error: Call to undefined function get_header() in /customers/technologicaluk.co.uk/technologicaluk.co.uk/httpd.www/blog/wp-content/themes/blog theme/index.php on line 1 “

I have no idea what im doing wrong as im a noob! 🙁 The tutorial i am following is at So can you please help 🙂

Here is my code.

<?php get_header(); ?>
<div id="container">

    <div id="content">
    </div><!-- #content -->

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

<div id="primary" class="widget-area">
</div><!-- #primary .widget-area -->

<div id="secondary" class="widget-area">
</div><!-- #secondary -->
<?php get_footer(); ?>

thanks