Batch change the time attributes of your files, with TimeStamp
TimeStamp is a free utility that will let you easily modify the timestamp of files and / or folders.
Using this program you can modify the “Created”, “Modified” and “Accessed” time attributes of one or more files, setting a custom time you will define.
TimeStamp is free for personal use only.
Please note that due to Microsoft’s limitations, if Windows Explorer is running under Administrator privileges, you should execute TimeStamp with the same privileges, e.g., when you want to drop system protected files onto the drop box.