thanks to all who replied to my vehement post.
you have confirmed my worst fear-I HAVE BEEN SCAMMED-
I am a bit of a dunderhead who does not even pretend to know how computers work.
I googled for a downloadable music sharing program. to replace the late lamented winmx.
Obviously got on a non genuine site (not hard to do) & followed the instructions.
What gets me really mad is that it worked beautifully-no probs with Lime wire at all whilst it was running.

My advice to the unwary BE CAREFUL .
- I will def contact Visa & make an attempt to retrieve the money . Realistically I have written it off to experience.
thanks once again for the support.
I will not elaborate on the darkness that I wish upon thieves of any calibre