Perhaps the simplest solution is using Xxcopy and the switch /SGFo.
http://www.xxcopy.com/xxcopy26.htm#SG

Thank you very much for your answer but Xxcopy is not a valid command
in my system, (I use Windows XP Pro SP3).
I tried the xcopy with the swithes SGFo and SG but it doesn't work. :-(

Regards,
Rob