3 utilities to do this are listed here:
http://www.online-tech-tips.com/computer-tips/how-to-change-the-last-modified-date-creation-date-and-last-accessed-date-for-files-and-folders/
FileDate Changer
This program works on Windows 95, 98,
ME, NT, 2000, and XP. I’m not really
sure if it’s going to work on Vista or
not. I’ll see if I can find one that
does! Anyway, it works without any
installation and only needs Internet
Explorer version 3 or above installed
on the computer. Click Add Files,
select the dates you want changed and
click Change File Dates! Pretty
simple. Note: Only works on files.
SetFileDate 2.0
This program has a prettier interface
and allows you to multi-select from an
explorer type interface rather than
having to add files one by one. You
can also change the dates of folders
using SetFileDate. It’s very small and
very easy to use!
eXpress Timestamp Toucher
The difference between this program
and the others is that eXpress TT
allows you to change the date and time
for a file or folders AND optionally
all sub-folders. This can prove to be
very useful if you need to change the
date and time for all files and
folders under a specific folder. You
can change the creation time, modified
time, and last access time.
