Ok after 2 1/2 hours of scratching my head wondering why it was crashing the game I found where the sneaky bastiches had put a test routine in the assembly language.
So the inf ammo is fixed.. and not only fixed I improved it a bit. It now gives you unlimited ammo, no reload AND infinite secondary weapons like grenades.
www.nosguild.org/bf2plus4trainer.rar
Still working on the jetpack fix then Ill start adding more functions.