Step 1: Click on the "Other Tools" tab in the left navigation bar.

Step 2: Click on the Message Board box.

Step 3: Click on the message board you want to see the threads for.

Step 4: Find and click on the thread to that you would like to add a comment to.

Step 5: Type in your comment in the leave a comment field.

Step 6: Click the blue "Save" button to post the comment.