Populating a new column in Admin Order List

I have added a new column "Supervisor" to the orders list in the admin section. I am trying to populate this new column with the name of the supervisor that is associated with the person who made the order. Supervisor is currently a custom customer attribute; a text box that a new user fills in on registration. I am having trouble displaying this information in my new column.

What is the problem
What have you done so far ?

M V C  = Model, View, Controller...
You need to make code changes in (at least) three places make this work.

If one does not want to make changes to the core view, how can one achieve this in NOP? I believe this is what the original author wanted.