A multiplayer-friendly solution to replace Halo 2 Vista's crosshairs.
Credit: martin.kosecky5
Texmod allows for the ability to replace all of Halo 2 Vista's crosshairs, but can be clunky to use, due to the need to open Texmod, then tell Texmod which the tpf file to use, followed by the exe file to execute every time you want to open the game with the crosshair replacements. However, this is a multiplayer-friendly solution.