Try stretching the window as far as it will go to the maximum size by grabbing the corners, then click on the maximize button. If my memory is correct there was an issue as you described it with every install on XP and Win2000/NT. Once you did the stretch routine, the issue would not repeat until you had to reinstall. Not sure about Vista however. I do know that there are issues with vista and KeyCreator in using the help files so Vista is not a recommended platform for KeyCreator at this time.