I am experiencing an issue where hitting the RETURN (enter) Key on the right side of my MacBook Pro Keyboard calls up Full Screen "Welcome to Windows Media Center". http://dl.dropbox.com/u/15285654/Screen shot 2012-04-15 at 04.46.03 PM.png This is making it VERY difficult to get work done. Any advice please on where to search for what is happening here? TIA!!