AD1881 Codec Windows 2K: If your OS is Windows 2K and you decide to install the AD1881 Codec drivers, the procedures are listed as follows. 1. Go to Start button, select Setting item. 2. Choose Control Panel item >>AC97 Audio >>Update Driver >>Next 3. Choose Next >>Next >>Specify a Locations >>Next item. 4. Type in the appropriate directory path where the AD1881 Codec driver exists \Audio\Intel810\AD1881\Win98_2k. 5. Press OK button and follow prompts. It will then start to install the driver. 6. After you finish installing the driver, reboot your system.