Dobry den Všem.
Man dotaz.
Jsou v delphi XE2 všechny komponenty od Indy.

procedure TForm1.Button1Click(Sender: TObject);
var
ASource: TIdMultiPartFormDataStream;
begin
ASource := TIdMultiPartFormDataStream.Create;
ASource.AddFile('fileupload', OpenDialog1.FileName, '');
IdHTTP1.Request.Referer := 'http://www.imageshack.us/';
IdHTTP1.Post('http://www.imageshack.us/', ASource);
ASource.Free;
end;