Roccat Kave - not detected as headphone

[eXalin]

Help! I have bought 5.1 head set but windows 7 is detected the headphones as speakers which is why i think there is no vibration or bass when i am using these headphones.

I am using an ASUS PD-E x58 board with realtek HD audio

 

[eXalin]

When i click on the back panel ports it does not do anything? am i doing something wrong

also when i did the 5.1 test, the speakers which show where the sound is coming out from are mixed up (right and left mixed up. back and sub and front are fine)