I use the Windows 7 and after you install Android SDK Tools, you can locate the USB driver at C:\Program Files\Android\android-sdk\extras\google\usb_driver
You need to modify the file android_winusb.inf (may need to save to Desktop and move to original folder due to Windows 7 protection), Add below line after section [Google.NTx86]
;HTC Incredible
%SingleAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CAC
%CompositeAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CAC&MI_01
If you use the x64 version, Also add below line after [Google.NTamd64]
;HTC Incredible
%SingleAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CAC
%CompositeAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CAC&MI_01
After you modify the file, you can in Device Manager and update the Andriod Device driver by manually click the button “Update Driver Software” and point to the folder of android_winusb.inf by install it.