When publishing with Dreamweaver and taking down your Frontpage site - did it change your .htaccess file any? I know with WordPress (if that is what you have for your blogging) it is heavily dependent on the .htaccess file and changing the content or overwriting it with something else could cause it not to work. Is your blog and forums installed into their own folder?
This might be a little easier for support to help you with on the server side as well, since they would be able to see the files that were effected. Might drop in a support ticket to them at
support@lunarpages.com. You should be able to get a reply that way - and if not, you can tell me the ticket number and I'll be sure you get somebody to look in on your ticket.
Thanks!