No doubt this thread has caused a degree of merriment in some quarters - mainly those who know what they are talking about.
However, just a quick update. I couldn't load the b****y thing on my lap top, equipped with Win7, but fortunately daughter came to stay....... I am actually in need of a new lap top, but dread Win10 and trying to load the thing on there, but that will, no doubt, be another story.
She followed instructions and everything, eventually getting the thing to load after a few diversions along the way - one of my problems had been that at an early stage the laptop had recognised the SPROG as a V3 but the casing showed it to be a V2 which is what it was bought as, so I'd given up at that point. It is that sort of thing which makes life so difficult for a bear of little brain. If it did what it said on the box........
I'll now be taking it to club on Thursday - I hope - and we'll have a play with it there. Fortunately we have a couple of really bright sparks (see what I did there?) who are well in to this electronics stuff. I'll report back later.
B