Sorry I can't help with this engine.
search for "xboard" or "Arena" and download one of these free chess GUIs. You can use them to play against (or analyse with) many many different engines (eg Hiarcs).
It should be easy to import the pgn or FEN of a RHP into these GUIs.
Post here again when help is needed (to install or import). 🙂
PS: visit www.playwitharena.com