Thanks for your help. I am now at the "fed-up with this" stage.
SWMBO is playing with her ipad and cockily saying that we do not need another pc, not even daughter's old one.
"Ah", I reply, "but if I can make this work, I will not have to buy my own ipad". ......
(Said daughter has, of course, a much newer, all singing all dancing pc)
I think I'll go and have a drink and come back to this tomorrow. (Possibly even avrio, which is manana, but without the sense of urgency.)
Thanks, all.