Thanks for your reply, and sorry for taking so long to respond.

Anyway, I can get as far as you have, but no further than that, as the program
doesn't download any of the catalogue pages (though they work fine when I
access the web site normally, in a browser). On the website homepage, when you
click on a catalogue then you go to a page where you can select and view any
of the pages from that catalogue. But HTTrack doesn't download the catalogue
pages for me, so when I load up the homepage from the saved by HTTrack files,
then the homepage loads fine, but when I click on any of the catalogues on the
home page, then instead of going to a webpage that views the catalogue's
pages, it goes to a webpage (loaded from my hard drive, of course) that
doesn't show the catalogue's pages.

All the program downloads are 122 files, nothing more.