Rename files with WSH script

wshscript-rename.js

// run it with
//  > wscript rename.js
// in the folder where the script resides
//
// or double-click it
var script = WScript.CreateObject("WScript.Shell");
var fso = WScript.CreateObject("Scripting.FileSystemObject");

for (var i = 28; i < 100; i++) {
  var file = fso.GetFile('pg' + i + '.png');
  file.Name = 'pg0' + i + '.png';
}