Use FileTouch utility to change file dates and times in batch files

"Windows keeps track of the date and time every file was created, and of the date and time it was last modified or opened, but it does not provide any ways that allow allows you to change these file dates and times. FileTouch is a command line utility that allows you to change them. It is similar to the well-known UNIX touch command."
This is definitely one of the most useful free utilities I have found on the net for a while. The last one was SyncToy. This time the good people at SoftTree Technologies have made FileTouch available for free. You can change the date or time stamp of a file, which is useful if you want to keep a file from being regarded as "old" by Hunter Killer or PerfectDisk or SyncToy.

FileTouch command line utility | 24x7 Automation Suite Tips, Scripts and Free Utilities