On this page you will find out how to change your windowed mode resolution.
To do so, please follow these steps:
Navigate to your
...\VUGames\Tribes Vengeance\Program\Binfolder and find
Open it with a text-editor like notepad. Use CTRL + F to find:
Underneath that term you will find 4 lines. Two of them have a X and two of them have a Y at the end of their names. The X stands for the width of your resolution, whereas the Y stands for the height of your resolution.
Choose the resolution values. For example:
[WinDrv.WindowsClient] WindowedViewportX=1920 WindowedViewportY=1080 FullscreenViewportX=1920 FullscreenViewportY=1080
Note this is completely analog to the declaration used in the first method.