Windows 7: 7.1 speakers when I use headset

Tried to make a good topic title, but it was not easy

I use a USB-headset. (Logitec G35) Which I use mostly for
gaming and movies. But when I play games like CS and Cod, I
need good sound on both of my ears. But in my sound settings, the
headset is sat as 7.1 (I think).



Where can I change this?




(Since I am Norwegian, some of the text is in my language, so
just ask if something needs to be translated.)

Konfigurere = Configure
Egenskaper = Properties