I'm not sure I understand your question. You downloaded a port monitor then it asks you for your local port? Then You have no clue what your port #'s are? Do you want to know all your port #'s and what they do? As far as port monitors go i am not fimiliar with Advanced TCP Logger. The one I use and would recommend would be TCPview which can be found here Here
If they helps in no way, please explain a little more what exactly you mean.