For some reason when I right click on the icon I dont see play dx9. I've tried it in both the bin32 and bin64 folders but I just cant see it.
EDIT: nvm I was able to do it with adding dx9 in the target field thanks Hamidxa.
EDIT 2: DUDE HOLY SHIT THANKS!!!!! I just tried your config and HOLY HELL the game looks fucking beauitfulllllllllllllllll!!!!!! I dont even see any performence decreases, I actually see an INCREASE wtf? Anyways thanks a lot bro!!
Glad to hear that my config made a noticable difference for you as well.
As for the performance levels, it should be right at around high, usually 1-2 FPS slower, but then again I haven't tested it versus vanilla high for quite some time (since patch 1.1) so you never know.
At any rate, enjoy your 35-40% savings in terms of performance while getting about 90-95% of the Very High looks.
(Edit: Everyone should be playing Crysis like this, it's a crime almost for those who don't know about it, I wonder why Crytek themselves do not include this sort of config in a patch, if even only as an option for those that want to emulate DX10 very high under DX9 settings...)