All my efforts to "squeeze" 5.1 audio on my PC failed. I ran a search and discovered that my problem is quite common. Most suggestions end-up with updating drives and/or with the miserable solution of "speaker fill", which opens all speakers, but leaves the user with no "real" 5.1 audio.
I wonder, can you suggest a real solution? My problem appears on all three operating systems on my PC: XP, Hebrew version of Windows 7 Ultimate, and English version of Windows 7 Ultimate.