Поиск файла

uses { ... ,} Masks;

procedure FindFiles(const Path, Mask: String; FileList: TStrings);
var
  SRec: TSearchRec;
  Dir: string;
begin
  Dir := IncludeTrailingPathDelimiter(Path);
  if FindFirst(Dir + '*.*', faAnyFile, SRec) <> 0 then Exit;
  try
    repeat
      if (SRec.Name = '.') or (SRec.Name = '..') then Continue;
      if (SRec.Attr and faDirectory) = faDirectory then // Вот проверка, папка или нет
        FindFiles(Dir + SRec.Name, Mask, FileList)
      else
      begin
        if MatchesMask(Dir + SRec.Name, Mask) then
        begin
          FileList.Add(Dir + SRec.Name);
        end;
      end;
    until FindNext(SRec) <> 0;
  finally
    FindClose(SRec);
  end;
end;

// Вызывать так:
FindFiles('F:\Programs', 'F:\Programs\*\bcd.txt', Memo1.Lines);