Don, try the following:

1. Go to the config directory of AFPD, by default this is at c:\program files\ipacs\aerofly professional deluxe\config
2. Make a backup of the file main.mcf
3. Open main.mcf with a simple text editor like notepad or word
4. Look for the first 3 lines and change them to:

window_width 1298
window_height 811
window_fullscreen 1