Sorry Richard but I'll stick to my guns here. If you can get onto PPRuNe you can ask Google a question. And you don't usually find beginners extracting files from isos.
OTOH it did cause me to pick up a couple more apps for my rainy day collection....
[my brother in London does this to me all the bl**dy time so maybe that's why I was a bit irritable]
Welcome and good luck Jingly.