OK! Finally posting after many, many hours of research Thanks so much for this forum and all the info and helpful people here I'd like to create an unattended XP Pro SP2 CD. I've installed and looked through most of the nLite options. I've downloaded, but have not tried using VMWare Workstation 5.5 - yet. I've got a retail upgrade XP Pro SP1 CD that I had slipstreamed with SP2 like 2 years ago. The last time I installed Windows was about 9 months ago and it consisted of a fresh install of an HP OS CD with XP Home SP2 that I immediately upgraded with the previously mentioned Pro SP2 CD. For the last month or so, Windows has been giving my laptop lots of runtime and hung app errors - it's time for a fresh install anyway. In particular, I read the thread about using files from existing installations to build a pre-activated CD and the MSFN Guide page about activating Windows. My computer's C:\WINDOWS\system32 directory has those OEM files, I guess from the original installation, and the WPA file. The Jellybean Key thing shows the retail key. Is it possible for me to build a pre-activated CD with my files?? Also, is it true that the WPA method no longer works with SP2 installs? Since my Pro disc is retail, I don't mind using the WINNT.SIF method and even calling in if I have to. I just figured it would be pretty nifty if one of the pre-activation methods would work for me. Looking forward to reading the replies and any other helpful advice for my first unattended CD...