任务计划NetScheduleJobAdd问题!(50分)

关于添加任务计划,网上流行如下代码:
unit insjob;

interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls;

type
TAT_INFO = record
JobTime: DWord;
DaysOfMonth: DWord;
DaysOfWeek: UCHAR;
Flags: UCHAR;
Command: PWideChar;
end;

PAT_INFO = ^TAT_INFO;
NET_API_STATUS = LongInt;

TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

function NetScheduleJobAdd(ServerName: PWideChar; Buffer: PAT_INFO; var JobID: PDWord): NET_API_STATUS;stdcall;

var
Form1: TForm1;

implementation
{$R *.DFM}
function NetScheduleJobAdd; external 'netapi32.dll' name 'NetScheduleJobAdd';

procedure TForm1.Button1Click(Sender: TObject);
var
ATInfoAT_Info;
jobidDword;
begin
getmem(atinfo,sizeof(TAt_info));
getmem(jobid,sizeof(dword));
atinfo^.jobtime:=3*60*60*1000+15*60*1000;//miliseconds from midnight to 3:15
atinfo^.DaysOfMonth:=4294967295;
atinfo^.DaysOfWeek:=255;
atinfo^.command:='c:/showok.exe';
atinfo^.flags:=8;


if NetScheduleJobAdd(nil,atinfo,jobid)<>2 then
showmessage('ok');
freemem(jobid);
freemem(atinfo);
end;

end.

但是在DELPHI7下并不能实现功能.


请问如何实现 添加 WINDOWS 任务计划?
SCHTASKS命令方式除外.

高手救救我吧[][][]