custom sidebar per page

Hi,

I was reading the previous post: http://wordpress.org/support/topic/custom-sidebar-per-page?replies=15
about creating a custom sidebar per page but still a little confused.

I’m trying to figure out where to put that if statement in my theme. There is a page called page.php in my list of pages with this code at the top:

<?php include (TEMPLATEPATH . ‘/sidebarLeft.php’); ?>

would i be adding the if statement to that code?

Also, do I make new php files of the custom sidebars that I will be creating? Is there a template to use for this? Can widgets still be added through the WP interface?

I’m using the Eximius theme.

Thanks!

new and learning…