[quote]Is there some file I can edit or command line option I can do? I don't see 3840x1024 in the drop-down when changing my resolution inside the game.
If you are running Vista just go into:
>Games
>Right Click on Warhead
>Select:Customise
>Select a play command (you can make another one or just edit the one in use)
>Add "-DX9 +r_width 3840 +r_height 1024" without the quotes to the target line. You can try it in DX10 mode by not typing in '-DX9' but I dunno if it works.
Edit: In XP you can just add the above to your shortcut properties!
Without the DX9 bit, obviously ;)
I'm able to select 3840x1024 from the in-game menu running in DX10 mode (confirmed by FRAPS). Oddly, the resolution dropdown ingame is a bit funky. Mousewheeling will not work, but if you find the obscure slider on the side of the window, you can drag down to the 3840x1024 selection.