One thing I tried was, after I had gone into the 747400guages file and set the TCAS range rings to on and saved the file, I changed the permissions of the file to Read Only. After changing the permissions to Read Only I was no longer able to select (or deselect) the Virtual Cockpit and winglets. I traded emails with Mr. Randazzo about this and he said that they would take a look at this issue. Maybe it will be resolved when the FSX version of the 744 is released.Stephen