Starting Over – Need Help with Faulty Admin

Bizarre thing happened yesterday. Somehow, my database file got nuked. My blog is hopelessly lost, and must be built again. Now, when I try to log in to wp-admin to start over, i get a big string of error code. Here it is:

Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/content/08/8188508/html/wp-includes/functions.php on line 3382

Warning: Cannot modify header information – headers already sent by (output started at /home/content/08/8188508/html/wp-includes/functions.php:3382) in /home/content/08/8188508/html/wp-includes/pluggable.php on line 934

So, how can I get back to my admin window and log in?