In the P98MOQUE file, update the Helps path to point to the pste1_gateway.html file in the /psentone/hemi folder. This path should be a URL path based on your virtual directory setup.
  
For example:
http://<server>/<dir>/psentone/hemi/pste1_gateway.html  

It is a good idea to make a note of the original PeopleBooks help URL in case you want to use it later.

Note: While setting up the Media Object Queues you may use Help Content as the Queue name and point to pste1_gateway.html file under ..\psentone\hemi in the published content folder as the On-Line and Off-Line Queue paths.