I wish it was that easy Dave, but it is not. On the left side it is showing my inbox and a few other things. But all my mailbox folders that were underneath are all gone, along with the emails in them.
I went into the Mail preference and found nothing to help me. I know they are not gone, but in never-never land!
Now I am having another problem with this mountain lion OS. When I am in a forum and someone puts a link in their thread I can click on it and go t the site. But here is the weird part, when it opens that window and I am through I close the window to find that my original window with the forum gone. I thought I made a mistake and should have used the back arrow. so I tried it and the link is actually opening a new window and closing the old one. These problems with ML are starting to get to me and p**s me off.