There are a few options - there's the ability to restrict access to pages
within DW. Have a look under Server Behaviours for User Authentication.
I've been using Web Assist's Security Assist which is a bit more intuitive,
and creates pages for you, and if there's a database backend storing records of
your users, including automatic password reminders kind of thing.
http://www.webassist.com/professiona...ls.asp?PID=114
Or, you can put the pages / files relevant in a particular folder, and put
password protection on that folder on your site's control panel that the
hosting company provides.