What I post below comes from my teammate Jason, I have been trying to get him to start blogging with me. If you find this information useful send me an email with the subject: GET JASON A BLOG!
Windows Messenger 5.0/5.1 (HKEY_CURRENT_USER\Software\Microsoft\Tracing)
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To generate a logfile, you must to set the EnableFileTracing registry value =1, exit and restart Windows Messenger
RTCDLL The tracing registry key for the SIP protocol conversation, limited authentication information,
and DNS queries made by client during automatic configuration
RTCIMSP The tracing registry key for the Instant Messaging Service Provider.
UI API calls. Useful when data on the wire looks correct, but information is not correctly displayed within the application
Office Communicator 2005 (HKEY_CURRENT_USER\Software\Microsoft\Tracing)
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To generate a logfile, you must to set the EnableFileTracing registry value =1, exit and restart Communicator.
LCAPI The tracing registry key for the SIP protocol conversation, limited authentication information,
and DNS queries made by client during automatic configuration. All the lower level SIP traffic is logged to this file.
LCIMSP The tracing registry key for the IM Service Provider. This contains logging for IM and Presence activities