The Tech Report writes:
Vista users running those cards were previously stuck with a "basic" driver that didn't include Creative's suite of control panel software and provided, in the company's words, "basic audio support and control options for sampling rate and speakers only." By contrast, the 1.04.0076 release includes Creative's audio console, EAX console, device control, and speaker settings control panels. Users can also adjust speaker configurations, audio output quality, S/PDIF sampling rate, sound effects, and Creative multi-speaker surround settings.You can download the drivers over here.