メモ
http://www.microsoft.com/japan/technet/treeview/default.asp?url=/japan/technet/prodtechnol/windowsserver2003/proddocs/entserver/sag_ADUpgradeW2K.asp
http://www.microsoft.com/japan/technet/treeview/default.asp?url=/japan/technet/prodtechnol/windowsserver2003/proddocs/entserver/prepare_for_the_upgrade_of_a_mixed_or_Win2000_domain.asp
http://support.microsoft.com/default.aspx?scid=kb;ja;278875