var fileName = string.Format("C:\Drafts\Excel 97-2003 formats\All Data 09 26 2012_Edited.xls");
        var connectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0;", fileName);

        var adapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", connectionString);

        DataSet Originalds = new DataSet();
        adapter.Fill(Originalds, "Employees"); // this is where the error shows up