Understood. I will not post here until I am back on the trail of the topo software. I was about to ask if this was inappropriate for the topic, apologies for the digression but much gratitude for the guidance and patience.
For the benefit of others like me, if you download theGarmin XT V 5.00.60 UK US Gk standalone version on the [Only registered and activated users can see links. ] thread, you will not find an .exe file and so will not be able to follow the guide (as detailed in my previous posts). As Catymag has instructed download the file from Catymags first post and everything makes sense. Sometimes I have to make a mistake to learn a lesson so sorry for that.