I just went to Start then searched for the FOV program and tried to open it. Again, it insisted that I had to insert a valid serial number and then hit "activate" button. Maybe, when I entered the activation key a couple days back, I led the program to think it was from a dvd since i still had the D2 dvd in the computer dvd slot. I appreciate what yuu and Lynn say but I can not get past the serial number road block to play by using eithee the d2 icon or start, fov program, open fov methods.