if i connect it to the case audio wires into the motherboard will it use the sound card, or the onboard sound?
i assume I have to disable the onboard sound in the bios settings, once i get my computer up and running, and allow the sound card to handle any sound I/O.
If you connect it to the motherboard, it will use the onboard audio period. If you want the audio from the card, the wires need to come from the card. The reason is there is not a way for the soundcard to shoot the audio over to the motherboard pins, those hooked directly to the southbridge which does the onboard audio only.