How to install a Sound Card
Most modern sound cards are designed with the PCI interface and connects to the PCI slot of your motherboard. A PCI slot looks like the slots on the following image.
Place your sound card on top of a chosen slot. Gently push down the card so it sits into position. Once the card is seated correctly into position, screw the card on to the case.
Finally insert the audio cable into the CD-IN socket. The other end of the cable should be connected to Audio-out socket on your CD/DVD-ROM drive.