Order Status not changing on Order Results Page

Hello,

2 questions.....

1) How could I set a value for OrderStatus upon completion of order? When someone successfully purchases an item I would like the OrderStatus to populate with pending. Currently it remains null.

2) On our order details page we are able to see each individual order's status. If we change a status of an order through the order update page, it display the appropriate status on the order details page. Exactly what we want. However, the order results page does not show the correct order status within the results table. What do i have to do to show the corresponding order status in the order results page?

Attached is a screen shot of the order results table showing an order status of pending on all orders. This "pending" is being pulled from the top most recent order. If I change Bobby Rohr's order status, it reflects on all of the order within the results table. Again the order details page is correct, this table isn't.

Please let me know what I could try.

Thanks