Product Theme: register_sidebar_widget is deprecated since version 2.8!

Installed Product Theme on testing server using debugging mode. Running WordPress 3.0.1 Multisite with no plugins or widgets yet activated. Server is running Apache 2.2.11 and PHP 5.2.9.

I'm not a programmer, but receiving the following errors related to sidebar registration and applied the following fixes. Does this look right or am I way off base?

Code Error:

Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in C:\xampp\htdocs\wp30test\wp-includes\functions.php on line 3237

Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in C:\xampp\htdocs\wp30test\wp-includes\functions.php on line 3237

Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in C:\xampp\htdocs\wp30test\wp-includes\functions.php on line 3237

Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in C:\xampp\htdocs\wp30test\wp-includes\functions.php on line 3237

Working in wp-content/themes/product/library/functions/widget-functions.php, lines 67, 68 initial code that generated the error:

register_sidebar_widget('Most Comment', 'custom_most_comment');
egister_widget_control('Most Comment', 'custom_most_comment_admin', 300, 200);

changed to:

wp_register_sidebar_widget('Most Comment', 'custom_most_comment', '');
wp_register_widget_control('Most Comment', 'custom_most_comment_admin', 300, 200);

and then again on lines 181, 182 initial code that generated the error:

register_sidebar_widget('Comment It Avatar', 'custom_recent_comment');
register_widget_control('Comment It Avatar', 'custom_recent_comment_admin', 300, 200);

changed to:

wp_register_sidebar_widget('Comment It Avatar', 'custom_recent_comment', '');
wp_register_widget_control('Comment It Avatar', 'custom_recent_comment_admin', 300, 200);

See attached file for actual changes to "widget-functions.php". Thanks for the help, Brannon.