I have the Hiface2. I followed the instructions above and everything installed without any problem. Fired up the Hiface2 using Foobar and reset the output source. Worked perfectly on the first try. It is too soon to say if there is any sonic difference but after a quick listen I certainly do not notice any degradation and perhaps a bit more detail but time will tell. I was encouraged to do this because my Windows 7 system usually did not recognize the Hiface 2 without unplugging it and plugging it back in after opening the computer. A minor hassle but if this will solve it I figured it was worth a try. If it delivers better sound that would always be a plus. Frankly, I have always found the Hiface 2 to deliver great sound quality so I have no complaints there. I will report back in a few days on how this works out in solving the problem of Windows recognizing the Hiface 2 on boot.
I had the same issue on Sony Vaio, so far after 3 reboots it's all right, I don't have to replug it anymore to get recognized by OS. Just make sure to fire up USB Audio Control Panel at least once (it's not in autostartup anymore) and disable Power Saving mode.