It's an off-the-shelf thing and only after purchasing it did I find out that the provider has encrypted all the source and templates making any modifications impossible. If this doesn't work for us, we can look at alternatives to replace it.
There is a My Prefs area in there where you can customize some settings - including an addition "skin" to try. Since I do not have access, maybe you could look in there and tell me if there is anything you can change to change the behavior of the thread lists.
One alternative just for reading is:
http://www.viperalley.com/forum/archive/index.php/