FX, can you reply with the name of your sound-card. Also, can you tell me if you are running the latest drivers?
If your unaware of the name of your hardware device you can Right Click My Computer > Select Properties > Click the Device Manager Tab and it should tell you the name of the device under Sound, Video & Game Controllers.
Once we have this information we should be able to research more efficiently. Please keep note of the location as this will generally tell you where what all your hardware is.
- Redline / Xing