one more point, i just added more text in hidden.txt
using
C:\>notepad test:hidden.txt
(added more text)
C:\>dir test.txt
Volume in drive C has no label.
Volume Serial Number is 8C19-481A

Directory of C:\

28-06-2009 22:58 17 test.txt
1 File(s) 17 bytes
0 Dir(s) 33,659,916,288 bytes free
^MY date and time didnt change???? how come it should? i checked, the text is added in hidden.txt