Obtener la dirección MAC (MAC ADDRESS)

[henystronic]

estuve usando la funcion, y corre perfectamente en delphi 7 el problema es que para delphi 2010 no funciona ya que me da error al compilar y es con respecto a que son incompatibles pchar y ansichar; finalmente modifique una variable y funciono perfecto aqui les dejo la funcion;
uses NB30;

Código Delphi [-]
 
function GetMACAdress: string;
var
  NCB: PNCB;
  Adapter: PAdapterStatus;
  URetCode: PChar;
  RetCode: ansichar;
  I: integer;
  Lenum: PlanaEnum;
  _SystemID: string;
  TMPSTR: string;
begin
  Result    := '';
  _SystemID := '';
  Getmem(NCB, SizeOf(TNCB));
  Fillchar(NCB^, SizeOf(TNCB), 0);
  Getmem(Lenum, SizeOf(TLanaEnum));
  Fillchar(Lenum^, SizeOf(TLanaEnum), 0);
  Getmem(Adapter, SizeOf(TAdapterStatus));
  Fillchar(Adapter^, SizeOf(TAdapterStatus), 0);
  Lenum.Length    := chr(0);
  NCB.ncb_command := chr(NCBENUM);
  NCB.ncb_buffer  := Pointer(Lenum);
  NCB.ncb_length  := SizeOf(Lenum);
  RetCode         := Netbios(NCB);
  i := 0;
  repeat
    Fillchar(NCB^, SizeOf(TNCB), 0);
    Ncb.ncb_command  := chr(NCBRESET);
    Ncb.ncb_lana_num := lenum.lana[i];
   RetCode          := Netbios(Ncb);
    Fillchar(NCB^, SizeOf(TNCB), 0);
    Ncb.ncb_command  := chr(NCBASTAT);
    Ncb.ncb_lana_num := lenum.lana[i];
    // Must be 16
    Ncb.ncb_callname := '*               ';
    Ncb.ncb_buffer := Pointer(Adapter);
    Ncb.ncb_length := SizeOf(TAdapterStatus);
    RetCode        := Netbios(Ncb);
    //---- calc _systemId from mac-address[2-5] XOR mac-address[1]...
    if (RetCode = chr(0)) or (RetCode = chr(6)) then
    begin
      _SystemId := IntToHex(Ord(Adapter.adapter_address[0]), 2) + '-' +
        IntToHex(Ord(Adapter.adapter_address[1]), 2) + '-' +
        IntToHex(Ord(Adapter.adapter_address[2]), 2) + '-' +
        IntToHex(Ord(Adapter.adapter_address[3]), 2) + '-' +
        IntToHex(Ord(Adapter.adapter_address[4]), 2) + '-' +
        IntToHex(Ord(Adapter.adapter_address[5]), 2);
    end;
    Inc(i);
  until (I >= Ord(Lenum.Length)) or (_SystemID <> '00-00-00-00-00-00');
  FreeMem(NCB);
  FreeMem(Adapter);
  FreeMem(Lenum);
  GetMacAdress := _SystemID;
end;