PROSS.ORG.UK

How to add it to your windows updates and download it DIRECT from microsoft!!
I found this today on the net cant beleive its this simple!!

Just add the following to a .bat file the execute it:

@echo off

reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\XPSP3 /v RCPreview /t REG_SZ /d 1c667073-b87f-4f52-a479-98c85711d869 /f

Then open windows update…SP3 will be now available to you!!!

ENJOY

Blog