Install ADB driver for android device.

Open Adb Manager to install Google USB Driver package, revision 4 from Available packages->Third party Add-ons->Google Inc

After that, you will find the downloaded files here

c:\Dev\Android\android-sdk\extras\google\usb_driver

Your one will be different, you should be able to find it.

Then, Go to device manager (WIN+R, devmgmt.msc)

Then, plug in your device, and find the hardware ID of your device,

open the file Added your device hardware id

[Google.NTamd64]
; HTC Dream
%SingleAdbInterface%        = USB_Install, USB\VID_0BB4&PID_0C01
%CompositeAdbInterface%     = USB_Install, USB\VID_0BB4&PID_0C02&MI_01
%SingleBootLoaderInterface% = USB_Install, USB\VID_0BB4&PID_0FFF
; HTC Magic
%CompositeAdbInterface%     = USB_Install, USB\VID_0BB4&PID_0C03&MI_01
%CompositeAdbInterface%        = USB_Install, USB\VID_0BB4&PID_0C91&REV_0226&MI_01   <-- I added this line, Put to [Google.NTx86] if you are running 32bit os.

Then, update your driver from device manager, point the file location to c:\Dev\Android\android-sdk\extras\google\usb_driver

...Then, you know how to install a drvier.

--
Feng