Hi,
O.K. , i tested the language Tool Vistalizator32 on german version with 64bit.
I changed the language to english - US -> then rebooted the System. After that i changed the speech recognition to english - US and rebooted the system again.
Note: change both options in one step doesen't work, so you will have to boot two times.
After that i checked speech-recognition with the speech-test-tool. Then tested it in-game. Everything works fine.
So i think the mod can be used on every Win 7 System, 32 and 64bit.
@skwasjer: You did such a great work, thanks a lot!!!!