如何得到客户端的MAC地址
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http://expert.csdn.net/Expert/topic/2449/2449844.xml?temp=.2080652
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自已写一个COM
http://www.jaron.cn/chs_scripts/8/2003-05/20030510125555-100944.html
http://www.csdn.net/develop/read_article.asp?id=22292