I didn't have this problem when I first installed FSX, but it has turned up after a couple of months. I can play FSX fine in fullscreen, but if I need to switch to window mode to do something in Windows than I can't get back into fullscreen mode. I press alt+enter, but all I get is the border around fsx and I can still see my desktop. I can hear FSX and the plane flying but it just won't go back into Fullscreen mode. I can play in window mode, but the picture is very small. Anyone know what the problem is?Thanks-Jared

I've had this "problem" too.After pressing the "alt" button, it stays with the options listed along the top border. Very annoying.You will have to press Alt + Tab, then click on the screen again when it reappears and then click Alt + Enter to resume a Full Screen mode.I'm guessing the problem may lie in the Graphics Card some people are using. I have an ATI Radeon XT8600. Something like that.:-spacecraft