windows - How can I change the timestamp on a file?

Possible Duplicate:
How to modify timestamp in a dll or exe?
Windows equivalent of the Linux command 'touch'?

How can I set the timestamp for a file via the command-line to a specific date?

My specific situation is Windows 7.

Answer

Due to William Jackson's answer, I found a similar question on Stack Overflow.

The accepted answer states to use Powershell and these commands:

$(Get-Item ).creationtime=$(Get-Date "mm/dd/yyyy hh:mm am/pm")
$(Get-Item ).lastaccesstime=$(Get-Date "mm/dd/yyyy hh:mm am/pm")
$(Get-Item ).lastwritetime=$(Get-Date "mm/dd/yyyy hh:mm am/pm")

Edit

Two examples:

(This one is from the comments:) Set the last-access time for a file aaa.csv to the current time:

$(Get-Item aaa.csv).lastwritetime=$(Get-Date)

Set the creation time of a file foo.txt to November 24, 2015, at 6:00am:

$(Get-Item foo.txt).creationtime=$(Get-Date "11/24/2015 06:00 am")