Are you evaluating Windows 8?
Are you running it on a Lenovo machine? Looking for drivers?
Here is a neat page on the Lenovo support site where Windows 8 beta drivers can be downloaded.
Note that the drivers are provided for testing purposes, as mentioned in the site’s disclaimer:
The Windows 8 Beta Support Program provides beta quality BIOS, utilities and drivers that are intended for testing purposes only. Please proceed at your own risk.