Column additions to Admin pages required!

Hi

I love opencart, but after intensely working with it for a few weeks and knowing that my site is going live end onf next week, I need to make some backend changes that I desperately need.

1. As we work from SKU's I'm looking for help to change the 'model' column to SKU's in the Admin/catalog/products list, or better still add another column showing SKU's.

Nile 2. To search customer orders more easily, I was wondering if you could me add two columns in the admin/orders list. I need one to show the SKU's and one to show a thumbnail of the product.

Nile Please can anyone help?

Many thanks