The Microsoft Systems Management Server (SMS) 2003 software development kit (SDK) Version 2 is available for download as an installation package from the Microsoft download center. The SDK contains documentation and sample applications for developing SMS applications that integrate with, or use, the SMS Administrator console, SMS Provider (server-side applications), and client-side applications. Most of the sample applications make use of Windows® Management Instrumentation (WMI) application programming interfaces (APIs), and the documentation references WMI and Microsoft Management Console (MMC) SDKs. Additionally, the documentation includes the new Management Point API.
Download: Systems Management Server 2003 Software Development Kit (SDK) V. 2.0
Download: Systems Management Server 2003 Evaluation Software