While this trainer may be a few months old, I enjoyed it and wanted to share it with you guys. This trainer was made so the player can experience multiple camera angles in Halo 2. The thread with instructions and the download can be found here:
While the trainer seems difficult to use, the creator has already stated it is a WIP and no consideration was given to button placement at this time.
To my surprise if you set TSR in evox to the normal setting, the game will boot right up w/ a debug bios and you will be able to take screens: