Thanks for your reply but I am a newbie so I apologise if my question is naive
but I don't know what the separators should be in the text file. So could I
trouble you to give an example of the synstax for the text file to use to
mirror the following example addresses:

<http://www.shoesizes.com/shoeboxes/500/fashion.html>
<http://www.shoesizes.com/shoeboxes/501/fashion.html>