This did not work for my install of Win 7/64 home premium. I did not have Infinst.
Asus P5B-e mobo. Fresh install of W7/64.
Edit: Using the drivers supplied by Win7/64, I did not have the Infinst file. After getting the latest drivers from Intel for the P965 chipset and installing them, I rechecked this and now I have Infinst and it shows version 9.1.1.1025 (the latest as of this writing).
Note: I always thought the first thing to do after a fresh OS install was to install the chipset drivers and then the video drivers, etc. But in this case, thinking that W7 supplied the correct drivers (and perhaps it did but I didn't know how to confirm it), I installed the chipset drivers after many other drivers. So perhaps the order is not so important anymore. I don't know.