Well, all these new applications are interesting to hear about and I will explore them all in due course but for the time being I have found a solution...
Simple really I suppose but it takes time for me to work things out - I ain't the brightest spark on computers...
I put the Scala Player in the same drawer as my slide show, I also put the System drawer from my Scala hard drive installation in the same drawer, I change the tool type of my slide show script to point to the scala player in the drawer (changed from pointing to where I installed scala on my HD) Then... and this is where I previously made a schoolboy error, I transferred the drawer to my friends laptop making sure that the path is exactly the same as it was on my HD where I created the slideshow... in the system partition in a drawer called "Slideshows" So it mirrors where it was created and resides on my HD (hope this all makes sense but essentially it means the script can find the slide show pages and samples etc...)
Anyway, bang - it works and he does not have Scala installed at all on his hard drive so I think I have got there...
Mind you, the slide show sound samples slow right down on his laptop but I think this is a fault of his crappy machine as the show runs well on my laptop (all this via Winuae)
I am sure that making smaller slideshows and getting them onto a floppy would be better but that brings other challenges. For now I'm happy. This slide show was 11MB in total so I will have to experiment with compressed images and smaller samples next time...
If anyone is interested in the slideshow I will upload it to dropbox at some stage.
Thank you everyone for your help and comments.