var fso = new ActiveXObject("Scripting.FileSystemObject");
var f = fso.GetFolder("C:\\");
var lFiles = f.Files

var fso = new ActiveXObject("Scripting.FileSystemObject"),
    fd = fso.GetFolder("C:\\");
    en = new Enumerator(fd.Files);
for (; !en.atEnd(); en.moveNext()) {
    var f = en.item().Name; //       
}