I think computers go out of their way to make sure you can't.
You can do it in windows with shareware that exploits bugs.
You may be able to do it with brute force:
Change the system clock to the date you want the file to be.
Copy the contents of your file into a new file, then replace the original with the new.
You can do it in one step in the terminal:
Code:
cat bob.txt >>bob2.txt ; mv -f bob2.txt bob.txt
you can even add in the date change like this:
Code:
sudo date 8506131627 ; cat bob.txt >>bob2.txt ; mv -f bob2.txt bob.txt
that should set the creation date to
June 13, 1985, 4:27 PM
see man date for the date syntax
have fun