I recommend that you do the examples in chapter 14 of the
book you are using, if you are not quite comfortable with
implementing data-driven pages. Ignoring any Dreamweaver tricks for
the moment, you can simply code ColdFusion in Dreamweaver's "Code"
view: define a query to retrieve your filenames and the comments,
and populate a form (not an html table) with them, a limited number
of records at a time. Then when users update the comment fields and
submit the form, your form action template will do an update query
to put the records back with their updated comments.
Once you have that working, you can go through Dreamweaver
tutorials that will help you to understand how Dreamweaver can
assist in coding queries, etc.
With the basic application working, you will want to explore
more advanced controls for presenting large tables of data for
updating, instead of simple form fields. For example, with a Flex
solution you would probably use a datagrid control to bring up a
large number of your file records for editing.
Jim