discount microsoft office 2010 update key batch st

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Petr Laznovsky 29.09.2010 - 16:53Hi there,office Home And Student 2010 32bit key (http://www.cheapwindows7key.net/office-2010-serial),
there is certainly batch which beginning like this:
@echo OFF
setlocal ENABLEDELAYEDEXPANSION
chcp 65001 >NUL
::
::
if "%1"=="" goto par_mis
if "%2"=="" goto par_mis
if "%3"=="" goto par_mis
under Win7 work fine,discount microsoft office 2010 update key (http://www.cheapwindows7key.net/office-2010-serial), but under Windows2003 batch unexpectedly finish
after line:
chcp 65001 >NUL
No error message,office Professional Plus x86 key (http://www.cheapwindows7key.net/office-2010-serial), %errorlevel% is 0
When i put REM before this command,microsoft windows 7 home basic key (http://www.cheapwindows7key.net/), than work fine.
Any ideas??
L.