Proactive Security Auditor FE (Freeware Edition) is a free, small, fast
and easy to use program to assist system administrators and ordinary
users to keep their computers secure by identifying what security
updates are installed on local and remote machines, and allowing to
download and install missing patches from Microsoft web site.



The following Microsoft products are supported:
Windows NT/2000/XP/2003
Internet Explorer
Windows Media Player
MDAC and MSXML
DirectX
Microsoft Office
IIS Server
Exchange Server
SQL Server
BizTalk Server
Commerce Server
ISA Server
The features and advantages of Proactive Security Auditor FE are:
Very small and extremely fast
Intuitive user interface
Agentless - no software to install on client machines
Credentials management
Does not use MSXML and MDAC - no additional software/libraries needed
Scanning remote machines selected by NetBios names or IPs
Compare scans made at different times - see what patches have been added
and removed
Browse Microsoft security bulletins (all or by product)
Filter patches by status (installed/missing/note)
Filter patches by severity (critical/important/moderate/low)
Generate HTML reports
View modes - by computer or by date
Deploying patches on local or remote machines
http://www.elcomsoft.com/psa.html