What exactly do you mean?
I have Tripplehead2go working for a long time...
Whether Tripplehead2go works or not, this depends to your operating system, not CoD.
I can have the game running Full Screen at resolution 3072x786 since the first version of the game, that is not a problem.
What is a problem however is the game does not support "three monitors view" like il2fb (not yet).
Because of that, you have a very wide screen view but, very narrow. I do not like it.
For this reason, I have set my desktop resolution to 3840x1024 and I run CoD on a window of 1280x1024
THIS IS PHOTO PATCHED (ver. beta 13915)
3840x resolution, move sliders to the right to see the game
Recapitalising, yes, Tripplehead2go is working fine. 3renderers view is not (yet).
I hope it helps...
~S~