char bb[3000];
      char cc[100];
      WSDATA ws;
      SOCKET s;
      struct sockaddr_in A;
      int ii;

      gg = WSAStartup(0x0101, &ws);
      s = socket(AF_INET, SOCK_STREAM, 0);
      A.sin_family      = AF_INET;
      A.sin_port        = htons(80);
      A.sin_addr.s_addr = inet_addr("62.104.23.32");
      connect(s, (struct sockaddr *)&A, sizeof(A));

      strcpy(bb, "POST /login.php3 ");
      /* Keep-Alive: 300 */
      /* Connection: keep-alive */
      /* ... */
      send(s, bb, strlen(bb), 0);

      ii = 1;
      while(ii)
        { ii = recv(s, cc, sizeof(cc), 0);
          /* ... */
        }

      strcpy(bb, "GET /");
      strcat(bb, Location);
      strcat(bb, Cookie);
      /* Keep-Alive: 300 */
      /* Connection: keep-alive */
      /* ... */
      send(s, bb, strlen(bb), 0);

      // +++ bis hier ist alles ok +++

      // Als Antwort kommt nur noch ii = 0

      ii = 1;
      while(ii)
        { ii = recv(s, cc, sizeof(cc), 0); // <== ii gleich 0, bedeutet:
                                           // "If the connection has been
          /* ... */                        // gracefully closed, the return
                                           // value is zero."
        }
      closesocket(s);

Warum reißt die Verbindung ab? Oder ist WSAConnect() die richtige Funktion?