Custom "New Posts Button"
 

I set up new tabs for specific forums (Ex: Classified, Knowledge Base, etc)

I'm using 4.2.1 Navigation Manager to set up custom sub links. I know that the "New Posts" button in the Forums sub nav bar finds all new posts. Is there a way to customize that to search everything except certain forums? In the Classifieds Tab i only want it to search new classifieds threads. same thing for knowledge base and so on and so forth.

thanks in advance

bump for some help