OpenCart Small Project / Help

We are looking for someone to do a very small OpenCart job /help for us. As you know, when someone checks out on OpenCart, they have the ability to type in an order comment. When you view a specific order in the admin area (Sales >Orders > View Order), you can see that comment. What we want to do is display this order comment on the list of orders when you click Sales > Orders. We already created a column, and all we need to do is figure out the exact variable to echo to get that order comment to display for each order in the order list - haven't been able to figure it out. That's all we need! Also, it would be helpful to make the comment able to be filtered in that order list as well, just like everything else in the list. We'll ask you if you can do this as well. Also, for everything above, we require that you show us exactly what you're doing and what files have been modified with what. Thanks!