If you're an ITPro and responsible for maintaining, managing and monitoring systems then check out the RC1 Candidate for System Center Essentials 2007. 

Microsoft® System Center Essentials 2007 (Essentials 2007) is a new management solution in the System Center family of IT systems management products. Essentials is specifically designed for IT professionals working in midsize businesses who often face IT challenges similar to those of larger enterprises – troubleshooting end user problems, automating management tasks, managing multiple systems, and diagnosing and resolving IT problems. Essentials 2007 is specifically designed and built to help IT professionals in midsize businesses address these management challenges..

Go here and download the System Center Essentials 2007 RC1 Candidate

Click here to get the System Center Essentials 2007 Overview white paper