You can't get USB drivers from the manufacturer, for some reason they are ALL supplied by Microsoft (I think it has something to do with the interaction between the driver and the HAL and that USB is a true standard that they can mandate compliance for :P ).
Anyway, the point is that you'll want to try going to windowsupdate.microsoft.com and making sure that all of your critical updates are installed, especially Service Pack 2. You might also want to check that you're running DirectX 9.0c (Start > Run > dxdiag should launch the info utility) and see if perhaps there are any additional optional hardware driver downloads
