Custom column of type "People/Group" named say: "last replied by" for team discussions which reflects the person/group who last replied to the thread in the topic (specific to that topic) in the discussion board in MOSS

Requirement End User requires an OOB column of type “People/Group” named say: “last replied to” in Discussion Board. This column should show the Person/Group who last replied to the thread specific to the topic in the Discussion Board. Currently, there is an OOB Column “LastUpdated” which shows the timestamp as when was last replied (Date/Time)…