I Can't login to admin, but here's what I did...

I've had this problem for a while now, but I can't figure t out. I posted like 3 posts about this, but i'm not sure if it had posted so I just want to make sure.
It seems to happen when I leave my browser idle for a long time, then boom for some reason I cant login. So here's what I did...
I made a new folder in admin/includes/local/configure.php

I typed in this code

<?php //TheseareforDEBUGONLY-notforaliveshop define('SESSION_RECREATE','False'); ?> 

These were the errors that came up

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/halosfav/public_html/admin/includes/local/configure.php:3) in /home/halosfav/public_html/includes/functions/sessions.php on line 108

Warning: Cannot modify header information - headers already sent by (output started at /home/halosfav/public_html/admin/includes/local/configure.php:3) in /home/halosfav/public_html/admin/includes/init_includes/init_templates.php on line 36

Warning: Cannot modify header information - headers already sent by (output started at /home/halosfav/public_html/admin/includes/local/configure.php:3) in /home/halosfav/public_html/admin/includes/functions/general.php on line 21

So where do I go from here?

I've figured it out by using the
DELETE FROM admin WHERE admin_name = 'Admin';
INSERT INTO admin (admin_name, admin_email, admin_pass, admin_level)
VALUES ('Admin', 'admin@localhost', '351683ea4e19efe34874b501fdbf9792:9b', 1);
in phpmyadmin SQL