I've found an incorrect link:
When you click on the Information button during this step of the Infopath Integration wizard, you're directed to this page:
ms-help://SourceCode.Help/K2blackpearl/InfoPath_Process_-_Form_Template_Publishing.html
After having unzipped and explored the CHM file, I finally found that the "real" file is:
ms-help://SourceCode.Help/K2blackpearl/InfoPath Process - Form Template Publishing.html (no underscores)
