Audio related: change speaker setup?

When you go to the Control Panel -> Multimedia -> Playback -> Advanced Preferences -> Speaker Setup you can choose which kind of speaker setup you have.

I'm usually using quadrophonic speakers, but at late night I use headphones.

Is it possible to change the setup from VB, with some kind of registry related API perhaps? I have no idea that where the speaker setup info is saved, but I belive it is somewhere in the registry... It's just so boring to click so many times... :P

Alternatively I could do the thing by feeding mouse clicks and stuff but that's just an alternative.

Thanks.

AAAAARGH!

I did the "alternative" version, and it works fine. Too bad the Windows's own settings have no effect, the only thing that matters is the creative surround mixer. Have to convert the alternative style to the surround mixer and then it'll do :)