I'm trying to find a way to change a file time and/or date. I've found many command line tools, but none were free. Is there a way to do it (WMI, FileSystemObject, ?) or a link to a free (GPL) command line tools?

Some references:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/setfiletime.asp
http://msdn.microsoft.com/library/defaul...urrent_time.asp

My goal is to modify some files (e.g.: convert .doc -> .txt) and then change the new files to reflect the old files date.

Thank you very much in advance!