Thank you Alpesh Nakar for providing this resource for the PSConfig command line utility. This is deep dive and practical reading for mastering SharePoint 3.0 administration. The actual PSconfig switch information is found in the psconfig.chm Help file (%systemdrive%\Program Files\Common Files\Microsoft Shared\web server extensions\12\Help\1033) and the information is found there at the very last listed topic.
11 Mar, 2007 SharePoint
Using Configuration Wizard without the wizard! That’s right.
This has nothing to do with our installation that we have done so far. However, I think you should know about this very powerful exe file that ships with this version of Windows SharePoint Services v3.
details in linked blog post below