Lo all, Thanks to everyone here I've been happily using a Windows XP SP2 unattended CD for a while now. However, today I decided it was time to slipstream all the hotfixes into the installation CD. I tried nLite, the Integrate switch and finally the SVCPACK.inf methods but none of them seem to be working ie. Hfnetchk is still reporting all of the hotfixes missing. Any help would be greatly appreciated. Thanks, John svcpack.inf