U3's Couch

Creates compiled help files for a given BTS 2006 installation. This tool can be run on an ad-hoc basis using the UI or from the command line as a post build/deploy task to create a compiled help file describing a BTS 2006 installation. It will compile: BTS Host configuration, Send/Receive port configuration, Orchestration diagrams, Schema and Map content, Pipeline process flow, Adapter configuration, Rule engine vocabularies and policies, More… and publish them as compiled help files. Optionally you can embed custom HTML content and custom descriptions for all BTS artifacts to produce a more customized look and feel to the CHM output

For more information about this tool : http://www.codeplex.com/BizTalkDocumenter
You can downoad this tool from the following link :
http://www.codeplex.com/BizTalkDocumenter/Release/ProjectReleases.aspx?ReleaseId=5426