Jkath, I think what she means is that when she goes into a certain forum, the thread is showing the first post to the last. She is wanting it in reverse, the last post to the first, so that she can see the latest without having to rumble through the posts that she has already read. If I'm wrong, I'm sorry.
Go into your user cp, click on edit options. Scroll down to the thread display options. You can click on the drop down box. It is probably on linear, oldest posts first. Change it and save edit.