Fist, change some config files on Arduino IDE, don't worry, it's easy.
Files with path are list below.(Arduino-1.0.1 maybe different depends on your version)
Download our new files and replace:
* [new USBCore.cpp](http://www.seeedstudio.com/wiki/File:USBCore.zip)
* [new boards.txt](http://www.seeedstudio.com/wiki/File:Boards.zip)
For Mac Lion user, your Arduino folder may not list under Document/Arduino, open your Application folder, find "Arduino", right click , then "show package content".
There will be a path way to "hardware". Find board.txt, replace it(or you can back up original file by rename it to board-old.txt).
For windows users, it will esaier, just find the Ardunio Folder!