I know this is a little late but I was out of the office last week and I'm still getting caught up. In case you missed it, we released the Configuration Manager 2007 Software Development Kit (SDK) to the web last week. It is available for immediate download from the Microsoft Download Center: http://www.microsoft.com/downloads/details.aspx?FamilyId=064A995F-EF13-4200-81AD-E3AF6218EDCC&displaylang=en. There is also a link on TechCenter (http://technet.microsoft.com/configmgr/default.aspx).
This SDK contains documentation and samples for developing Configuration Manager 2007 applications that integrate with the Configuration Manager console, the SMS Provider (server-side applications), and the client-side applications.
J.C. Hornbeck | Manageability Knowledge Engineer