Putting Adsense or RSS news feed in sidebar
 

I've done this on another theme but wanted to check here first since there is no "editor" page with Atahualpa... do I just go into my cpanel and edit the sidebar.php, putting the code where I want it? Or is there a widget specifically for this type of html?

Thank you!

The text widget takes HTML too. To use PHP code use the PHP code widget http://wordpress.org/extend/plugins/php-code-widget/