How to Update to Win XP Sp3 with registry hack

Yesterday I found an article how to hack Win Xp registry so I can update to SP 3 rc1 . I found that article at this link "http://dailyapps.net/2007/11/hack-attack-get-windows-xp-sp3-through-windows-update/"
here the script

@echo off
reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\XPSP3 /f 2> NUL
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\XPSP3 /v RCPreview /t REG_SZ /d 1c667073-b87f-4f52-a479-98c85711d869 /f
echo XPSP3 registry key has been set. Please check for updates in Windows Update - Kudos to dailyapps.net
pause

copy paste that script to notepad, then save as winxpsp3hack.cmd.
Double click that file, just follow the instruction.
After that update your windows via automatic update.