Thanks, Chris for such a detailed and excellent response.

I've downloaded Eclipse, and when I get the time later this week I'll start
tinkering again. In
the short term, I'll just take the PHP route, because while I realise not
everyone has access to
PHP, it will save looking into other barcoding options and actually exporting
another graphic
file for each of the books.

In the long run, I'm hoping to do some more tweaking, but I'd better start
crawling before I
learn to walk.

Kind Regards,
James.