If you’re referring to the banner-type of thing we used to have on the old forum, no, you can’t get it back… it’s a feature that’s gone. You get emails to notify you; that’s the closest.
When you log out (which I basically never do) and when you log back in, if you have a new message, then there is a notice at the top of the screen telling you that you have a new message. But if, like me, you don’t actually log out, this won’t be helpful.
Read my books! Volume 1 and 2 of A Dragon Medley are available now.
http://www.sarahjestin.com/mybooks.htm
I host the feedback lists, which are maintained by drag0nfeathers.
http://www.sarahjestin.com/feedbacklists.htm