The card is very old and not drivers are going to be released for anything high than XP 32 bit(Win Vista/7/8 need a new driver model, The company is not going to be making new drivers).
If you have a system that runs Windows 7, Chances are you have onboard audio that you can use at least.
I am going to be closing this as it almost a year old. If you need help please post your topic about it in the required section of the forum.