uses
  WinSock;

const
  WINSOCK_VERSION = $0101;

function GetIPAddress(name: string): string;
var
  WSAData: TWSAData;
  p: PHostEnt;
begin
  WSAStartup(WINSOCK_VERSION, WSAData);
  p := GetHostByName(PChar(name));
  Result := inet_ntoa(PInAddr(p.h_addr_list^)^);
  WSACleanup;
end;