Realtek AC'97 Drivers for Windows 7and Vista operating systems.
Audio drivers available for download from the Realtek website are
general drivers for our audio ICs, and may not offer the customizations
made by your system/motherboard manufacturer. To be sure you obtain the
full features/customizations provided in your original audio product,
please download the latest drivers from your system/motherboard
manufacturer's website. (From Majorgeeks)