Microsoft have released Network Monitor Parsers for Lync download them here
You can download Microsoft Network Monitor 3.4 here
I found I also needed the parser filters from codeplex to get the Lync parsers to install, you can get them here
I must admit, I’m usually a wireshark guy. Here are some useful links to get you started with Netmon.
http://blogs.technet.com/b/netmon/p/usagevideos.aspx
http://blogs.technet.com/b/netmon/p/learn.aspx
http://blogs.technet.com/b/netmon/archive/2010/06/04/parser-profiles-in-network-monitor-3-4.aspx
