Originally posted by Brian_
Can you tell me where to find it? (btw, the F keys didn't have any effect insofar as changing widescreen to fullscreen).
I have not the game currently installed, but i am absolutely certain that is in the central Options menu; either in the "game" options or the "graphics/visuals" options. If i am not mistaken it requires you to tick a box for the fullscreen or widescreen.

In any case however even if you dont find it it makes little difference in playing the game - i got the impression that your field of vision is the same regardless.