Microsoft has released a useful utility for IIS administration, called
IIS
Diagnostics Toolkit.
The IIS Diagnostics Toolkit is a combined release of popular tools used
by today's IIS users. These tools include tools aimed at resolving problems
related to Secure Socket Layer (SSL) issues, permission or security problems,
gathering data for your SMTP server included with IIS, as well as the famous Log
Parser utility used to sift through hundreds or thousands of log files very
quickly.
You've to download it...