Where is text that normally appears in sidebar.php?

I am trying to use Fold Page List to create my navigation in the left sidebar. Fold Page List replaces the functionality provided by the wp_list_pages tag that is usually found in the sidebar.php and requires me to replace the code fragment that looks like this

<?php wp_list_pages ($arglist); ?>
with this:
<?php wswwpx_fold_page_list ($arglist); ?>

Since Atahualpa doesn't have a sidebar.php, where would I find the wp_list_pages code to change?

jmek