function IsInternetConnected(AHost: PAnsiChar): Boolean;
var
  PHE: PHostEnt;
  GInitData: TWSAData;
begin
  WinSock.WSAStartup($101, GInitData);
  PHE := WinSock.GetHostByName(AHost);
  WinSock.WSACleanup;
  Result := (PHE <> nil);
end;
//delphi/2257