参考
http://japan.cnet.com/news/media/story/0,2000047715,20075406,00.htm
http://www.itmedia.co.jp/enterprise/articles/0411/05/news072.html
http://info.nikkeibp.co.jp/multithread/
http://ascii24.com/news/specials/article/2004/11/01/652319-000.html
http://www.watch.impress.co.jp/av/docs/20041029/pana.htm
http://enterprise.watch.impress.co.jp/cda/ohkawara/2004/10/29/3741.html