Very easy. I'm not familiar with those forums in particular, but I monitor my own forums using Simon.

What you need to do is add a test for a forum page that lists new postings (e.g. the forum index), and add one or more filters to examine the relevant portion(s) of that page. For example, you could check the information about the topmost post, or a reply count, or similar values.

The Block filter is particularly useful for this, but a Find-based filter can also be useful.

I hope this helps.