If you direct link to this forum (which you probably shouldn't because you miss out on the information in the Members Area webpage), you will most likely be presented with a login form. That login form is part of the aMember software that I use to control access to various parts of the site. It is not the prettiest form in the world but it is certainly functional. I have modifed the code for the form so that it is a little more informative than it was (e.g. using the phrase "Serial Number" instead of "Password", etc...).
Edit: For clarity, since making this post, we no longer have the members only web page. After logging in, you now go straight to the forums. Everything FF3 related will be posted in these forums.