You've probably seen the announcements on the SMS 2003 Desired Configuration Monitoring add-on solution:
http://blogs.technet.com/tmintner/archive/2005/11/23/415018.aspx
http://blogs.technet.com/eileen_brown/archive/2006/01/19/sms_dcm_guides.aspx
http://marcusoh.blogspot.com/2005/11/sms-2003-desired-configuration.html
http://www.microsoft.com/technet/itsolutions/cits/mo/sman/dcm.mspx
One of the developers of the DCM solution has posted some additional information and some short samples on his blog, available at http://blogs.msdn.com/saikodi/. Check it out, and feel free to post comments and suggestions on additional information you would like to see posted about the solution.