超急~~~請問一下驅動usb的問題????

tom7232

我利用範例  DE2_70_NIOS_DEVICE_LED裡頭有USB 與 PC 連結且附有 USB 在 PC 端的驅動程式
我和安裝的readme檔照做，
1) Launch the Quartus II software.
2) Open the DE2_NIOS_DEVICE_LED.qpf project located in the <install path>\DE2_NIOS_DEVICE_LED\HW folder. (File menu -> Open Project)
3) Open the Programmer window. (Tools menu -> Programmer)
4) The DE2_NIOS_DEVICE_LED.sof programming file should be listed.
   Check the 'Program/Configure' box and set up the JTAG programming hardware connection via the 'Hardware Setup' button.
5) Press 'Start' to start programming. The design should now be programmed.
6) Launch the Nios II IDE.
7) Switch the workspace to the <install path>\DE2_NIOS_DEVICE_LED\HW folder.
8) Build the project. (Project menu -> Build All)
9) Run the project on the board. (Run menu)
10) Plug in a USB cable with one end connected to the USB DEVICE port on the DE2 board and the other to the host computer.
11) If this is the first time using this design, the host computer will need install a driver to identify the board as a USB device. In the installation file, specify the USB driver to be the file <install path>\DE2_NIOS_DEVICE_LED\driver\D12test.inf.
12) Run the ISP1362DcUsb.exe program, located in the <install path>\DE2_NIOS_DEVICE_LED folder.

請問他第十一步，我是使用第一次設計，它要我安裝D12test.inf，請問在哪安裝?
如果可以請告訴我正確的流程，因為我不確定有沒有做對前面十個項目，謝謝大家