Thanks Guy's,
I manage to found it.
The USB drivers is distributed with AVR Studio and can be installed during the installation of AVR Studio.
In order to use an AVR Tool with USB connection it is required to install the USB driver. Please do NOT connect your AVR Tools to the computer before running the USB Setup from the AVR Studio setup file.
To install the USB driver, check the Install/Upgrade USB Driver checkbox during the setup of AVR Studio, and the USB Driver will automatically be installed.
When the USB driver is installed, please attach the USB cable to the PC. The 'Found New Hardware Wizard' should now appear. If asked, please choose "Install the software automatically", then click "Next" a couple of times. AVR Studio should now be able to detect the AVR Tool.
If the AVR Studio for some reason can't detect the AVR Tool after the USB setup, try to restart the computer in order to get the drivers properly loaded. If you cannot communicate with your AVR Tool after this, please take a look at this link.
If the 'Found New Hardware Wizard' can not find the USB drivers automatically, you can try to manually specify the folder;
.........\Program Files\Atmel\AVR Tools\usb
For more information on how to install the USB drivers, please take a look at the "Software and USB Setup" chapter in the AVR Tools User Guide found in the Help files of AVR Studio:
AVR Studio --> Help --> AVR Tools User Guide --> then find 'AVR Studio' within the Content page in the HTML Help and expand it --> Introduction --> USB Driver Installation
The USB driver can be installed even after AVR Studio have been installed by following the procedure explained in the "Software and USB Setup" chapter in the AVR Tools User Guide.