How to Increase USB Sample Rate in Windows Vista SP1
 

Microsoft Windows Vista’s default 125Hz USB sample rate is not enough for today’s gamers and end-users. There are many USB sample rate patches out there, but none of them support Windows Vista SP1 due to the new restricted driver signature enforcement feature. Now it is possible to use these patches - thanks to the latest version of our own Driver Signature Enforcement Overrider (DSEO). These patches and our tool have been well tested, but I am not taking responsibility for any damages! Use it at your own risk.

http://www.ngohq.com/news/15043-how-...vista-sp1.html