I'm not aware of any AMD chipset that requires a driver? You need to be a bit more descriptive with your hardware description. AMD is a processor maker. Are you actually referring to an ATI video chipset? If so, which chipset?
1: Used in a laptop or desktop pc?
2: Computer/Motherboard brand and model?
3: A description of the hardware device you need a driver for? eg: video, mb chipset, sound, modem, LAN, WLAN, etc.