ado连接带有密码保护的excel

[wxj6688]

ado连接book0.xls,密码123456

ADOConnection1.Close;
ADOConnection1.ConnectionString:='Provider=Microsoft.Jet.OLEDB.4.0;Data Source=book0.xls;Extended Properties=Excel 8.0;Jet OLEDB:Database Password=123456;Persist Security Info=False';
ADOConnection1.Open;


提示：无法解密，应该如何做？？我的分用完了，高手可怜我吧