Guide here.
http://www.tacktech.com/display.cfm?ttid=295You can skip the deploy.cab section.
found it alot easier then having to install Service Packs after installing windows.
Hope so others will find it useful. Don\'t forget you can use hotfixes aswell. Put them in the first main directory and do the same command as you did with the service pack itself (C:\\OS\\SP.EXE /U /X:C:\\OS\\SP) just change the sp.exe to the hotfix u want to add.
Easy way to get the hotfixes that your system needs is to do a clean install.. Install the service pack u want. Then do windows update and install hotfixes your system needs.
After you have reset your system go to your "C:\\Documents and Settings\\
Your Name\\Local Settings\\Temporary Internet Files" directory and copy all the hotfixes that are in that directoy. Instead of having to hunt out each one.
If theres nothing there then the system has deleted them after the restart. Probably better idea to not let it reboot and copy them straight away.
Cheers.