.ini Solution
C:\Program Files\SplinterCell4\SCDA-Offline\System\SplinterCell4.ini
[WinDrv.WindowsClient]
WindowedViewportX=1024
WindowedViewportY=768
FullscreenViewportX=1920
FullscreenViewportY=1200
____________________________
C:\Program Files\SplinterCell4\SCDA-Offline\System\SplinterCell4User.ini
4:3
[Engine.PlayerController]
DesiredFOV=75.0
DefaultFOV=75.0
16:10
[Engine.PlayerController]
DesiredFOV=85.281271852212
DefaultFOV=85.281271852212
16:9
[Engine.PlayerController]
DesiredFOV=91.315448228736
DefaultFOV=91.315448228736
If you have another Aspect Ratio you can calculate your FOV here: http://www.widescreengamingforum.com/fovcalc.php
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Multiplayer:
Just an update after reading the review today, there is a way to fix the resolutions in multiplayer mode, well at least this worked for me. Running Vista Ultimate 64 bit:
Go to Directory\SCDA-Online\System
Open Default.ini:
[WinDrv.WindowsClient]
WindowedViewportX=1680
WindowedViewportY=1050
FullscreenViewportX=1680
FullscreenViewportY=1050
MenuViewportX=1680
MenuViewportY=1050
That worked just changing that for me, then I went back and edited this part:
[SDLDrv.SDLClient]
WindowedViewportX=1680
WindowedViewportY=1050
FullscreenViewportX=1680
FullscreenViewportY=1050
MenuViewportX=1680
MenuViewportY=1050
Not sure if that second part had any effect, I tested it playing online and everything looks great. Let me know if this helped anyone. Wish people still played this online >_<