I'm really sorry but I don't understand what you are saying.  I have now
stopped the process and done a System Restore back to March 1st, hoping to get
rid of the stuff that's been downloaded on to my computer, but it's still
there, using up a lot of space.

I don't know what I am doing and am out of my depth.  I need someone to help
me with this. 

Please can you kindly and very simply tell me how to delete all the the
material downloaded by HTTrack. 

Thank you.