aaaggghhh!

for some reason (i’m a Noob) i changed my wordpress address url in dashboard to “www.wordpress.com” instead of what it was “www.mysite.co.uk/blog”
I need to change this back. i’ve been searching through the server looking for where this is to to change it back.
can anyone tell me where this is please?!?!

i found this in options-general.php but it’s not on there (never easy for me lol!)
<th scope=”row”><?php _e(‘WordPress address (URI):’) ?></th>
<td><input name=”siteurl” type=”text” id=”siteurl” value=”<?php form_option(‘siteurl’); ?>” size=”40″ class=”code” /></td>

thanks in advance