Sidebar 2

How may I place widgets in Sidebar 2 when the dropdown menu under “Current Widgets” in the Admin Panel shows Sidebar 1 as the only option.

I’m modifying kubrick to make a 3 column theme. So far, I have

• duplicated sidebar.php and renamed it sidebar2.php
• added <?php include ('sidebar2.php'); ?> to index.php
• logged out and restarted the server, hoping that would get sidebar2.php recognized in the “Widgetised sidebar” options

Right now the sidebar2 div appears in the correct position, but it is identical (content-wise) to the sidebar div.