On July 1 Microsoft released Microsoft Baseline Security Analyzer (MBSA) v2.0. The new version has support for Windows Server Update Services, and includes a new command line interface to perform local and remote scans.
MBSA 2.0 can identify security issues and missing updates for Windows 2000, Windows XP, Windows Server 2003, Internet Information Server (IIS) 5.0 and 6.0, SQL Server 7.0 and 2000, Internet Explorer (IE) 5.01 and later, and Office 2000, 2002, 2003, and Office XP.
download the MBSA 2.0 here