Sidebar not appearing

@Richard,

To answer your questions in their order:

1) Yes, it means dynamic sidebar(s) are supported

2) You add the code to whichever page files / templates you want the sidebar to render in

3) The sidebar will render EXACTLY where you place the code

4) You do not have to create a child theme, up to you, more on child themes here: http://codex.wordpress.org/Child_Themes

5) Yes, you replace my phrase with the identifier used when the register_sidebar or register_sidebars method was called in your functions.php file (it will be the value of the ‘id’ key in the array). You can read up on sidebars here: http://codex.wordpress.org/Function_Reference/register_sidebar

Regards,
Simon