Interesting, but not performing for all, as stated ....
I did the operations on my comp, exactly as described, it changed some DX files, I rebooted the system, and now it seems worse... Maybe I'll re-install the complete game, because I had some important Direct X messages the first time I launched... Please be aware all that tis is NOT a good thing for everyone's computer... (Mine: a 8400 E dual core at 3ghz - NVIdia 295 GTX on a P5ND asus motherboard...., with should be more than enough to run the game, and wich corresponds + or - to the tested computer in the above link....)