Centing Script with Hierarchy Structure

To whom it may concern: I was wondering if any one is able to customize a commenting script with hierarchy structure as seen below: TOPIC 1 Comment 1 ....Reply to comment 1 ........Reply to `Reply to comment 1` Comment 2 ....Reply to comment 2 ........Reply to `Reply to comment 2` TOPIC 2 Comment 1 ....Reply to comment 1 ........Reply to `Reply to comment 1` Comment 2 ....Reply to comment 2 ........Reply to `Reply to comment 2` TOPIC 3 Comment 1 ....Reply to comment 1 ........Reply to `Reply to comment 1` Comment 2 ....Reply to comment 2 ........Reply to `Reply to comment 2` Any assistance to create the above, would be greatly appreciated! Kind Regards, Carmen