如何在win 2000取得网卡出厂的真正mac地址？（在win 2000中很容易修改网卡属性的）(50分)

分不多，能回答得出来，主要体现成就感！

uses NB30;

function GetMACAddress: string;
var
AdapterList: TLanaEnum;
NCB: TNCB;
begin
FillChar(NCB, SizeOf(NCB), 0);
NCB.ncb_command := Char(NCBENUM);
NCB.ncb_buffer := @AdapterList;
NCB.ncb_length := SizeOf(AdapterList);
Netbios(@NCB);
if Byte(AdapterList.length) > 0 then
Result := GetAdapterInfo(AdapterList.lana[0])
else
Result := 'mac not found';
end;


function GetAdapterInfo(Lana: Char): String;
var
Adapter: TAdapterStatus;
NCB: TNCB;
begin
FillChar(NCB, SizeOf(NCB), 0);
NCB.ncb_command := Char(NCBRESET);
NCB.ncb_lana_num := Lana;
if Netbios(@NCB) <> Char(NRC_GOODRET) then
begin
Result := 'mac not found';
Exit;
end;

FillChar(NCB, SizeOf(NCB), 0);
NCB.ncb_command := Char(NCBASTAT);
NCB.ncb_lana_num := Lana;
NCB.ncb_callname := '*';

FillChar(Adapter, SizeOf(Adapter), 0);
NCB.ncb_buffer := @Adapter;
NCB.ncb_length := SizeOf(Adapter);
if Netbios(@NCB) <> Char(NRC_GOODRET) then
begin
Result := 'mac not found';
Exit;
end;
Result :=
IntToHex(Byte(Adapter.adapter_address[0]), 2) + '-' +
IntToHex(Byte(Adapter.adapter_address[1]), 2) + '-' +
IntToHex(Byte(Adapter.adapter_address[2]), 2) + '-' +
IntToHex(Byte(Adapter.adapter_address[3]), 2) + '-' +
IntToHex(Byte(Adapter.adapter_address[4]), 2) + '-' +
IntToHex(Byte(Adapter.adapter_address[5]), 2);
end;

mac地址改变了就不能知道原来的了

接受答案了.

问大家一个问题，如果w2k网卡的网线没有接好，上边的方法的不到mac address？，
该如何得到呢?