Are you sure the sound device is pci? I'd bet a coke it's integrated on your motherboard. If this is the case, you need to provide the motherboard/pc brand and model.
Please check the drivers listed on this page: http://members.driverguide.com/drive...D% 260%260001
Also, check the Realtek STICKY found near the top of this forum: http://forums.driverguide.com/showthread.php?t=30800