Here is the manual for the motherboard:
Epox MVP3C
As rupert notes, this board does not have onboard sound. That simply means there is no sound chip integrated into the motherboard. In order to have sound you have to have an add on PCI sound card. If you look at the manual linked above it is set to accept a Creative sound card but that does not mean that is what is on there by any means, another brand could be used. When you figure out what sound card is on there post back and we can direct you to the driver. Try this:
Everest Home Edition
This free utility will ID the card attached to the board along with everything else. Download, install, run. All the info is there. What driver is "referenced", as you say?
Jim