I found this old thread regarding the game Elvira 2: Jaws of Cerberus in which movements are controllable only by clicking the mouse on arrow icons: Re: Suggestion: allow the mapper to map a key to a mousse click ON A X,Y SPECIFIC COORDINATE
ripsaw8080 wrote a small COM executable that allowed the cursor keys on the keyboard to be used.
I wonder if it is possible to modify it to make it work with Day of the Viper.

Thank you all.