system() on Windows 2003

I have a script that calls: system('copy /b prnfile lpt4:', $result); or: system('type prnfile > lpt4', $result); the result is '1' and it doesn't send it to lpt4. I have tried: system('type prnfile', $result); the result of that is '0' and it puts all the info in the file on the browser screen. I have tried a number of commands in there it seems that the commands that only require 'read' permissions work but when they need to 'write' to something it fails. I think that this is a permissions issue but I can't figure out where to set what permission Has anyone had any experiance making PHP talk directly to a LPT port? so I an avoid this problem all togeather? I tried to do that when I wrote this script but was unsuccessful. this same script works on a 2000 box but with 2003's new security it causes a problem anyone have any ideas? anyone have any ideas?