Hey i have a CMI 8738 PCI 6.1 sound card, and I also have a AC'97 onboard card (disabled at the moment). Before i got my PCI card, I was able to use my AC'97 with a headset, (aud_out) a mic (mic_in) and a 2.1 sound system (aux_out). The beauty of this is that i can turn the speakers off (because they have a separate power source), and just use the headset when i need to be quiet. Or i can use the speakers when i'm listening and can be loud. My mic port shorted out, so i got the new PCI sound card. Now i'm wondering if I can do the same thing on the new sound card. I'm afraid to test it since I don't know the reason my old card shorted out. I'm using Xear 3D sound with 3-D CMI Audio Controller.