to change prefered device sound playback audio property of system with win32

Hi all,
I want to set programatically the audio properties of my system.
Actually i have installed a Virtual Audio Cable(VAC) on my machine for my new application which can send the voice played on my system to some other remote system to which i want.

Now what happening is that I have to maually change the audio setting for prefered device sound play back and have to choose Virtual Cable 1 out.

But now I want to do that stuff programatically.

Can some one help me out?

Thanks in advance.

Gaurav

According to this you cannot:
http://www.eggheadcafe.com/ng/micros...st20472012.asp

- petter