- Click on "Discussions" in the main navigation bar.
- Click on any discussion topic (the blue indented link beneath the forum title).
- Click on "Settings" beneath the dark gray bar within the discussion area. A new window will pop up.
- Uncheck the box next to "Show the preview pane."
- Click "Save" at the bottom right of the window.
If you would prefer to have all discussion threads open in the preview pane, follow the steps listed above, but instead of unchecking the box next to "Show the preview pane," check it and save.