How do I change it so that my forums display threads like they were back in the 1.2 series. The poster's username, info, statistics are on the left column and the post is on the right column.
If you want it for just you as a user, that go to User CP -> Edit Options -> Thread View Options -> Display posts in classic mode. If you want it for all the users, then, in the Admin CP, go to Configuration -> Show Thread Options -> Post Layout.