usa javascript o vbscript. Nn so se su Win7 esiste gia. Cmq i cmq sn Wscript e cscript.

codice:
var WSHShell = WScript.CreateObject("WScript.Shell");
var FSO = new ActiveXObject("Scripting.FileSystemObject");

function ModificaFile(filename){
      var fd;

      fd = FSO.OpenTextFile(filename, 8, false); // Append Mode
      fd.WriteLine("This is a test.");
      fd.Close();
}

function EnumFiles(cProgDir){
	var f, fc;   
   	
	if(FSO.FolderExists(cProgDir) == false)
		return;
   	f = FSO.GetFolder(cProgDir);
   	fc = new Enumerator(f.SubFolders);
   	for (; !fc.atEnd(); fc.moveNext())
		EnumFiles(fc.item());	
   	fc = new Enumerator(f.files);
   	for (; !fc.atEnd(); fc.moveNext())
		ModificaFile(fc.item());
}
dovrebbe essere grosso modo cs.