安装dfs
http://www.msits.com/archives/1195.html
dfs详细
http://os.51cto.com/art/201207/349072.htm、
dfs
http://wenku.baidu.com/link?url=ZCQcIAXxrInLXUpAWzwhPpyUUo_gcvM7b1M-9SyjJnf7lymiHVNist6xxFoUmuNlU6SSMIdQEbwnx-IWOxvU-2NhWyAfcy3HaChBXEp_4-i