Change Admin orders.php page to show early orders first

I was wondering how I could change the orders.php page in Admin to show the earliest orders first instead of the latest orders first. When we have alot of orders, the person fulfilling the orders tends to do the latest order first, when they should be handling them in the order that the orders came in.

I am certain that I need to do something in the /admin/orders.php file, but it's a pretty big file and want to make sure that I change the correct section.

Disregard... I found the Order by lines in the admin/orders.php file and changed each line from DESC to ASC.