It's been a while, but I finally had a chance to look into this properly. Here's the deal:
http://forums.wolflair.com/external....S2&forumids=67 (the URL that was shown above) is an RSS feed of
new threads. It's only updated when a new thread is posted to the forum.
http://forums.wolflair.com/external....&lastpost=true (the same URL as above, with &lastpost=true on the end) is an RSS feed of
new posts. I'm pretty sure this is what AndrewD2 wants - an RSS feed to show an update whenever something new is posted in a thread, not just whenever a new thread is posted.
Hope this helps!