Install Notepad2 on XP SP3

@echo off
echo *IMPORTANT*
echo This will kill all open instances of Notepad.
echo To cancel, end this batch file now (ctrl+c), or hit any key to continue.
pause
echo Killing all instances of notepad running...
TASKKILL /F /IM notepad.exe /T
echo Backing up...
call :backup %systemroot%\servicepackfiles\i386
call :backup %systemroot%
call :backup %systemroot%\System32
call :backup %systemroot%\System32\dllcache
echo Installing...
copy notepad2.exe %systemroot%\servicepackfiles\i386\notepad.exe /y
copy notepad2.exe %systemroot%\notepad.exe /y
copy notepad2.exe %systemroot%\System32\notepad.exe /y
copy notepad2.exe %systemroot%\System32\dllcache\notepad.exe /y
echo Done.
pause
goto :end
:backup
call set npath=%1
set count=0
for %%i in (%npath%\notepad.original*.exe) do (
set nname=%%i
set /a count=count+1
)
echo backing up to %npath%\notepad.original%count%.exe
copy %npath%\notepad.exe %npath%\notepad.original%count%.exe /y
:end