FS9 Chat Box/Window Question

Hello, I noticed a difference in the operation of the chat box/window in 2004 over 2002. In 2002 if you pressed enter, the chat box would appear. If you pressed enter again, the chat box would disappear (which was nice). Now, it seems there is another key required to be pressed to close the window. Does anyone know of a tool or setting that would make the chat box in 2004 behave like it did in 2002? Robert Williamson