I don't know if this will work for you but I do a similar thing for the "new posts" link. You have to edit the navbar template to use the following link:
http://www.forum.com/search.php?do=g...clude=64,23,12
I am guessing, that you could probably do the same thing for the todays posts link, so something like this:
http://www.forum.com/search.php?do=g...clude=64,23,12