removable media

From: Andy (anonymous_at_discussions.microsoft.com)
Date: 04/29/04 

Date: Thu, 29 Apr 2004 06:02:30 -0700

Hi
Is there a way to stop users using removable media such
as usb drives, i can disable floppy etc but cant find an
option for usb!
I want to stop "certain users" not all computers or users.
I have some people running programs they should not be
running.
Thanks
Andy