I obtained an eMachine eTower366c with a scratch-free installation disc. The disc says 333cs 350c and 366c. This set of drivers was found on the cd in the audio folder, under Drivers. This eMachine has integrated audio CS4235 (there isn't a card, the audio is built into the motherboard) If by chance you are looking for another CRYSTAL AUDIO driver, know this...CIRRUS LOGIC is the name of the manufacturer of CRYSTAL AUDIO chips/audio cards. It took me a long time to figure that out (I have another crystal card and it was very difficult to 'weed through' the 4 companies that start with the name CRYSTAL). Furthermore, this particular driver is dated 99, I think. The same Installation CD that has this set of drivers, also has DirectX 6.1...that should give you an idea of the age.