/* My Custom Widget */
02. 
03.add_action('widgets_init', 'my_text_widget_init');
04. 
05.function my_text_widget_init() {
06.  register_sidebar_widget('My Custom Widget', 'my_text_widget');
07.}
08. 
09.function my_text_widget() {
10.if (is_page('about')) {
11.?>
12.<li class="widget">
13.    <div class="my_widget_header">
14.        <h3>Pacific Cruise Line</h3>
15.    </div>
16.<div id="widget_content">
17.    <img class="widget_icon" src="<?php bloginfo('template_url'); ?>/custom/images/calendar_128.png" height="100px" alt="Coffee?" />
18.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec mollis, turpis suscipit sodales congue, magna urna egestas erat, vitae pulvinar tortor lorem vitae dolor. Ut sed mauris nisi.
19.</div>
20.</li>
21.<?php
22.}
23.}

http://www.fouroclockproject.com/2009/advanced-sidebar-widget-styling-for-thesis/

This code to be added to custom_functions.php  May also need to add to custom.css to style your custom widget. (This code found towards the end of the article).

Custom widget on selected pages in Thesis WP

wordpress

PHP